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Finding the Fourth Proportional to 8,649.10, 11,931.02 and 7,528.06

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Solution

The fourth proportional to 8,649.10, 11,931.02 and 7,528.06 is: 10,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.10 : 11,931.02 = 7,528.06 : x
  2. Step 2: Convert to fraction form
    8,649.10/11,931.02 = 7,528.06/x
  3. Step 3: Cross multiply
    8,649.10x = 11,931.02 × 7,528.06
  4. Step 4: Simplify right side
    8,649.10x = 89,817,434.42
  5. Step 5: Solve for x
    x = 89,817,434.42/8,649.10
  6. Step 6: Final answer
    x = 10,384.60

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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.