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Finding the Fourth Proportional to 8,985.88, 12,393.18 and 7,544.68

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Solution

The fourth proportional to 8,985.88, 12,393.18 and 7,544.68 is: 10,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.88 : 12,393.18 = 7,544.68 : x
  2. Step 2: Convert to fraction form
    8,985.88/12,393.18 = 7,544.68/x
  3. Step 3: Cross multiply
    8,985.88x = 12,393.18 × 7,544.68
  4. Step 4: Simplify right side
    8,985.88x = 93,502,577.28
  5. Step 5: Solve for x
    x = 93,502,577.28/8,985.88
  6. Step 6: Final answer
    x = 10,405.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.