Home / 9,412.32-12,988.89-5,220.66

Finding the Fourth Proportional to 9,412.32, 12,988.89 and 5,220.66

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Solution

The fourth proportional to 9,412.32, 12,988.89 and 5,220.66 is: 7,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.32 : 12,988.89 = 5,220.66 : x
  2. Step 2: Convert to fraction form
    9,412.32/12,988.89 = 5,220.66/x
  3. Step 3: Cross multiply
    9,412.32x = 12,988.89 × 5,220.66
  4. Step 4: Simplify right side
    9,412.32x = 67,810,578.47
  5. Step 5: Solve for x
    x = 67,810,578.47/9,412.32
  6. Step 6: Final answer
    x = 7,204.45

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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.