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Finding the Fourth Proportional to 8,981.44, 12,393.92 and 5,002.40

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Solution

The fourth proportional to 8,981.44, 12,393.92 and 5,002.40 is: 6,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.44 : 12,393.92 = 5,002.40 : x
  2. Step 2: Convert to fraction form
    8,981.44/12,393.92 = 5,002.40/x
  3. Step 3: Cross multiply
    8,981.44x = 12,393.92 × 5,002.40
  4. Step 4: Simplify right side
    8,981.44x = 61,999,345.41
  5. Step 5: Solve for x
    x = 61,999,345.41/8,981.44
  6. Step 6: Final answer
    x = 6,903.05

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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.