Home / 5,281.19-7,918.57-2,645.63

Finding the Fourth Proportional to 5,281.19, 7,918.57 and 2,645.63

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Solution

The fourth proportional to 5,281.19, 7,918.57 and 2,645.63 is: 3,966.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.19 : 7,918.57 = 2,645.63 : x
  2. Step 2: Convert to fraction form
    5,281.19/7,918.57 = 2,645.63/x
  3. Step 3: Cross multiply
    5,281.19x = 7,918.57 × 2,645.63
  4. Step 4: Simplify right side
    5,281.19x = 20,949,573.37
  5. Step 5: Solve for x
    x = 20,949,573.37/5,281.19
  6. Step 6: Final answer
    x = 3,966.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.