Home / 5,345.67-7,377.09-2,987.85

Finding the Fourth Proportional to 5,345.67, 7,377.09 and 2,987.85

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Solution

The fourth proportional to 5,345.67, 7,377.09 and 2,987.85 is: 4,123.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.67 : 7,377.09 = 2,987.85 : x
  2. Step 2: Convert to fraction form
    5,345.67/7,377.09 = 2,987.85/x
  3. Step 3: Cross multiply
    5,345.67x = 7,377.09 × 2,987.85
  4. Step 4: Simplify right side
    5,345.67x = 22,041,638.36
  5. Step 5: Solve for x
    x = 22,041,638.36/5,345.67
  6. Step 6: Final answer
    x = 4,123.27

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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.