Home / 9,412.49-12,987.75-5,432.86

Finding the Fourth Proportional to 9,412.49, 12,987.75 and 5,432.86

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Solution

The fourth proportional to 9,412.49, 12,987.75 and 5,432.86 is: 7,496.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.49 : 12,987.75 = 5,432.86 : x
  2. Step 2: Convert to fraction form
    9,412.49/12,987.75 = 5,432.86/x
  3. Step 3: Cross multiply
    9,412.49x = 12,987.75 × 5,432.86
  4. Step 4: Simplify right side
    9,412.49x = 70,560,627.47
  5. Step 5: Solve for x
    x = 70,560,627.47/9,412.49
  6. Step 6: Final answer
    x = 7,496.49

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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.