Home / 8,531.10-12,798.45-2,688.12

Finding the Fourth Proportional to 8,531.10, 12,798.45 and 2,688.12

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Solution

The fourth proportional to 8,531.10, 12,798.45 and 2,688.12 is: 4,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.10 : 12,798.45 = 2,688.12 : x
  2. Step 2: Convert to fraction form
    8,531.10/12,798.45 = 2,688.12/x
  3. Step 3: Cross multiply
    8,531.10x = 12,798.45 × 2,688.12
  4. Step 4: Simplify right side
    8,531.10x = 34,403,769.41
  5. Step 5: Solve for x
    x = 34,403,769.41/8,531.10
  6. Step 6: Final answer
    x = 4,032.75

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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.