Home / 5,748-7,933.20-3,390.72

Finding the Fourth Proportional to 5,748, 7,933.20 and 3,390.72

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Solution

The fourth proportional to 5,748, 7,933.20 and 3,390.72 is: 4,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,748 : 7,933.20 = 3,390.72 : x
  2. Step 2: Convert to fraction form
    5,748/7,933.20 = 3,390.72/x
  3. Step 3: Cross multiply
    5,748x = 7,933.20 × 3,390.72
  4. Step 4: Simplify right side
    5,748x = 26,899,259.90
  5. Step 5: Solve for x
    x = 26,899,259.90/5,748
  6. Step 6: Final answer
    x = 4,679.76

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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.