Home / 7,890.11-10,888.38-4,305.14

Finding the Fourth Proportional to 7,890.11, 10,888.38 and 4,305.14

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Solution

The fourth proportional to 7,890.11, 10,888.38 and 4,305.14 is: 5,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.11 : 10,888.38 = 4,305.14 : x
  2. Step 2: Convert to fraction form
    7,890.11/10,888.38 = 4,305.14/x
  3. Step 3: Cross multiply
    7,890.11x = 10,888.38 × 4,305.14
  4. Step 4: Simplify right side
    7,890.11x = 46,876,000.27
  5. Step 5: Solve for x
    x = 46,876,000.27/7,890.11
  6. Step 6: Final answer
    x = 5,941.11

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Half scale
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Double scale
Find fourth proportional to 7,891.11, 10,889.76 and 4,306.14
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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.