Home / 5,377.68-7,421.66-3,140.28

Finding the Fourth Proportional to 5,377.68, 7,421.66 and 3,140.28

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Solution

The fourth proportional to 5,377.68, 7,421.66 and 3,140.28 is: 4,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.68 : 7,421.66 = 3,140.28 : x
  2. Step 2: Convert to fraction form
    5,377.68/7,421.66 = 3,140.28/x
  3. Step 3: Cross multiply
    5,377.68x = 7,421.66 × 3,140.28
  4. Step 4: Simplify right side
    5,377.68x = 23,306,090.46
  5. Step 5: Solve for x
    x = 23,306,090.46/5,377.68
  6. Step 6: Final answer
    x = 4,333.86

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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.