Home / 3,929.40-5,422.53-2,358.38

Finding the Fourth Proportional to 3,929.40, 5,422.53 and 2,358.38

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Solution

The fourth proportional to 3,929.40, 5,422.53 and 2,358.38 is: 3,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.40 : 5,422.53 = 2,358.38 : x
  2. Step 2: Convert to fraction form
    3,929.40/5,422.53 = 2,358.38/x
  3. Step 3: Cross multiply
    3,929.40x = 5,422.53 × 2,358.38
  4. Step 4: Simplify right side
    3,929.40x = 12,788,386.30
  5. Step 5: Solve for x
    x = 12,788,386.30/3,929.40
  6. Step 6: Final answer
    x = 3,254.54

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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.