Home / 5,345.30-7,376.91-2,987.29

Finding the Fourth Proportional to 5,345.30, 7,376.91 and 2,987.29

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Solution

The fourth proportional to 5,345.30, 7,376.91 and 2,987.29 is: 4,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.30 : 7,376.91 = 2,987.29 : x
  2. Step 2: Convert to fraction form
    5,345.30/7,376.91 = 2,987.29/x
  3. Step 3: Cross multiply
    5,345.30x = 7,376.91 × 2,987.29
  4. Step 4: Simplify right side
    5,345.30x = 22,036,967.49
  5. Step 5: Solve for x
    x = 22,036,967.49/5,345.30
  6. Step 6: Final answer
    x = 4,122.68

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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.