Home / 9,412.04-12,988.18-5,220.20

Finding the Fourth Proportional to 9,412.04, 12,988.18 and 5,220.20

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Solution

The fourth proportional to 9,412.04, 12,988.18 and 5,220.20 is: 7,203.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.04 : 12,988.18 = 5,220.20 : x
  2. Step 2: Convert to fraction form
    9,412.04/12,988.18 = 5,220.20/x
  3. Step 3: Cross multiply
    9,412.04x = 12,988.18 × 5,220.20
  4. Step 4: Simplify right side
    9,412.04x = 67,800,897.24
  5. Step 5: Solve for x
    x = 67,800,897.24/9,412.04
  6. Step 6: Final answer
    x = 7,203.63

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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.