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Finding the Fourth Proportional to 8,588.90, 12,891.45 and 7,357.70

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Solution

The fourth proportional to 8,588.90, 12,891.45 and 7,357.70 is: 11,043.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,588.90 : 12,891.45 = 7,357.70 : x
  2. Step 2: Convert to fraction form
    8,588.90/12,891.45 = 7,357.70/x
  3. Step 3: Cross multiply
    8,588.90x = 12,891.45 × 7,357.70
  4. Step 4: Simplify right side
    8,588.90x = 94,851,421.67
  5. Step 5: Solve for x
    x = 94,851,421.67/8,588.90
  6. Step 6: Final answer
    x = 11,043.49

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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.