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Finding the Fourth Proportional to 8,910.86, 13,351.68 and 4,746.47

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Solution

The fourth proportional to 8,910.86, 13,351.68 and 4,746.47 is: 7,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.86 : 13,351.68 = 4,746.47 : x
  2. Step 2: Convert to fraction form
    8,910.86/13,351.68 = 4,746.47/x
  3. Step 3: Cross multiply
    8,910.86x = 13,351.68 × 4,746.47
  4. Step 4: Simplify right side
    8,910.86x = 63,373,281.81
  5. Step 5: Solve for x
    x = 63,373,281.81/8,910.86
  6. Step 6: Final answer
    x = 7,111.92

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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.