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Finding the Fourth Proportional to 8,870.92, 13,307.67 and 4,709.86

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Solution

The fourth proportional to 8,870.92, 13,307.67 and 4,709.86 is: 7,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.92 : 13,307.67 = 4,709.86 : x
  2. Step 2: Convert to fraction form
    8,870.92/13,307.67 = 4,709.86/x
  3. Step 3: Cross multiply
    8,870.92x = 13,307.67 × 4,709.86
  4. Step 4: Simplify right side
    8,870.92x = 62,677,262.63
  5. Step 5: Solve for x
    x = 62,677,262.63/8,870.92
  6. Step 6: Final answer
    x = 7,065.47

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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.