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Finding the Fourth Proportional to 8,472.04, 11,690.72 and 4,695.36

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Solution

The fourth proportional to 8,472.04, 11,690.72 and 4,695.36 is: 6,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.04 : 11,690.72 = 4,695.36 : x
  2. Step 2: Convert to fraction form
    8,472.04/11,690.72 = 4,695.36/x
  3. Step 3: Cross multiply
    8,472.04x = 11,690.72 × 4,695.36
  4. Step 4: Simplify right side
    8,472.04x = 54,892,139.06
  5. Step 5: Solve for x
    x = 54,892,139.06/8,472.04
  6. Step 6: Final answer
    x = 6,479.21

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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.