Home / 5,357.40-8,045.70-3,898.20

Finding the Fourth Proportional to 5,357.40, 8,045.70 and 3,898.20

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Solution

The fourth proportional to 5,357.40, 8,045.70 and 3,898.20 is: 5,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.40 : 8,045.70 = 3,898.20 : x
  2. Step 2: Convert to fraction form
    5,357.40/8,045.70 = 3,898.20/x
  3. Step 3: Cross multiply
    5,357.40x = 8,045.70 × 3,898.20
  4. Step 4: Simplify right side
    5,357.40x = 31,363,747.74
  5. Step 5: Solve for x
    x = 31,363,747.74/5,357.40
  6. Step 6: Final answer
    x = 5,854.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.