Home / 7,370.28-10,170.72-5,389.20

Finding the Fourth Proportional to 7,370.28, 10,170.72 and 5,389.20

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Solution

The fourth proportional to 7,370.28, 10,170.72 and 5,389.20 is: 7,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,370.28 : 10,170.72 = 5,389.20 : x
  2. Step 2: Convert to fraction form
    7,370.28/10,170.72 = 5,389.20/x
  3. Step 3: Cross multiply
    7,370.28x = 10,170.72 × 5,389.20
  4. Step 4: Simplify right side
    7,370.28x = 54,812,044.22
  5. Step 5: Solve for x
    x = 54,812,044.22/7,370.28
  6. Step 6: Final answer
    x = 7,436.90

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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.