Home / 7,335.28-10,122.51-3,978.01

Finding the Fourth Proportional to 7,335.28, 10,122.51 and 3,978.01

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Solution

The fourth proportional to 7,335.28, 10,122.51 and 3,978.01 is: 5,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.28 : 10,122.51 = 3,978.01 : x
  2. Step 2: Convert to fraction form
    7,335.28/10,122.51 = 3,978.01/x
  3. Step 3: Cross multiply
    7,335.28x = 10,122.51 × 3,978.01
  4. Step 4: Simplify right side
    7,335.28x = 40,267,446.01
  5. Step 5: Solve for x
    x = 40,267,446.01/7,335.28
  6. Step 6: Final answer
    x = 5,489.56

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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.