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Finding the Fourth Proportional to 9,384.64, 12,942 and 5,845.36

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Solution

The fourth proportional to 9,384.64, 12,942 and 5,845.36 is: 8,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,384.64 : 12,942 = 5,845.36 : x
  2. Step 2: Convert to fraction form
    9,384.64/12,942 = 5,845.36/x
  3. Step 3: Cross multiply
    9,384.64x = 12,942 × 5,845.36
  4. Step 4: Simplify right side
    9,384.64x = 75,650,649.12
  5. Step 5: Solve for x
    x = 75,650,649.12/9,384.64
  6. Step 6: Final answer
    x = 8,061.11

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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.