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Finding the Fourth Proportional to 8,697.22, 12,010.68 and 7,430.86

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Solution

The fourth proportional to 8,697.22, 12,010.68 and 7,430.86 is: 10,261.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.22 : 12,010.68 = 7,430.86 : x
  2. Step 2: Convert to fraction form
    8,697.22/12,010.68 = 7,430.86/x
  3. Step 3: Cross multiply
    8,697.22x = 12,010.68 × 7,430.86
  4. Step 4: Simplify right side
    8,697.22x = 89,249,681.58
  5. Step 5: Solve for x
    x = 89,249,681.58/8,697.22
  6. Step 6: Final answer
    x = 10,261.86

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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.