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Finding the Fourth Proportional to 8,774.85, 13,162.97 and 2,931.48

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Solution

The fourth proportional to 8,774.85, 13,162.97 and 2,931.48 is: 4,397.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.85 : 13,162.97 = 2,931.48 : x
  2. Step 2: Convert to fraction form
    8,774.85/13,162.97 = 2,931.48/x
  3. Step 3: Cross multiply
    8,774.85x = 13,162.97 × 2,931.48
  4. Step 4: Simplify right side
    8,774.85x = 38,586,968.64
  5. Step 5: Solve for x
    x = 38,586,968.64/8,774.85
  6. Step 6: Final answer
    x = 4,397.45

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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.