Home / 8,457.28-12,688.72-5,333.68

Finding the Fourth Proportional to 8,457.28, 12,688.72 and 5,333.68

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Solution

The fourth proportional to 8,457.28, 12,688.72 and 5,333.68 is: 8,002.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.28 : 12,688.72 = 5,333.68 : x
  2. Step 2: Convert to fraction form
    8,457.28/12,688.72 = 5,333.68/x
  3. Step 3: Cross multiply
    8,457.28x = 12,688.72 × 5,333.68
  4. Step 4: Simplify right side
    8,457.28x = 67,677,572.09
  5. Step 5: Solve for x
    x = 67,677,572.09/8,457.28
  6. Step 6: Final answer
    x = 8,002.29

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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.