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Finding the Fourth Proportional to 8,854.69, 13,283.78 and 2,931.34

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Solution

The fourth proportional to 8,854.69, 13,283.78 and 2,931.34 is: 4,397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.69 : 13,283.78 = 2,931.34 : x
  2. Step 2: Convert to fraction form
    8,854.69/13,283.78 = 2,931.34/x
  3. Step 3: Cross multiply
    8,854.69x = 13,283.78 × 2,931.34
  4. Step 4: Simplify right side
    8,854.69x = 38,939,275.67
  5. Step 5: Solve for x
    x = 38,939,275.67/8,854.69
  6. Step 6: Final answer
    x = 4,397.59

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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.