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Finding the Fourth Proportional to 9,612.40, 14,407.40 and 4,418.80

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Solution

The fourth proportional to 9,612.40, 14,407.40 and 4,418.80 is: 6,623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,612.40 : 14,407.40 = 4,418.80 : x
  2. Step 2: Convert to fraction form
    9,612.40/14,407.40 = 4,418.80/x
  3. Step 3: Cross multiply
    9,612.40x = 14,407.40 × 4,418.80
  4. Step 4: Simplify right side
    9,612.40x = 63,663,419.12
  5. Step 5: Solve for x
    x = 63,663,419.12/9,612.40
  6. Step 6: Final answer
    x = 6,623.05

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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.