Home / 7,817.51-10,788.12-4,280.72

Finding the Fourth Proportional to 7,817.51, 10,788.12 and 4,280.72

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Solution

The fourth proportional to 7,817.51, 10,788.12 and 4,280.72 is: 5,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.51 : 10,788.12 = 4,280.72 : x
  2. Step 2: Convert to fraction form
    7,817.51/10,788.12 = 4,280.72/x
  3. Step 3: Cross multiply
    7,817.51x = 10,788.12 × 4,280.72
  4. Step 4: Simplify right side
    7,817.51x = 46,180,867.11
  5. Step 5: Solve for x
    x = 46,180,867.11/7,817.51
  6. Step 6: Final answer
    x = 5,907.36

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Half scale
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Double scale
Find fourth proportional to 7,818.51, 10,789.50 and 4,281.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.