Home / 6,890.10-10,335.15-6,458.10

Finding the Fourth Proportional to 6,890.10, 10,335.15 and 6,458.10

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Solution

The fourth proportional to 6,890.10, 10,335.15 and 6,458.10 is: 9,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.10 : 10,335.15 = 6,458.10 : x
  2. Step 2: Convert to fraction form
    6,890.10/10,335.15 = 6,458.10/x
  3. Step 3: Cross multiply
    6,890.10x = 10,335.15 × 6,458.10
  4. Step 4: Simplify right side
    6,890.10x = 66,745,432.22
  5. Step 5: Solve for x
    x = 66,745,432.22/6,890.10
  6. Step 6: Final answer
    x = 9,687.15

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Similar ratio
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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.