Home / 5,345.57-7,376.70-2,987.66

Finding the Fourth Proportional to 5,345.57, 7,376.70 and 2,987.66

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Solution

The fourth proportional to 5,345.57, 7,376.70 and 2,987.66 is: 4,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.57 : 7,376.70 = 2,987.66 : x
  2. Step 2: Convert to fraction form
    5,345.57/7,376.70 = 2,987.66/x
  3. Step 3: Cross multiply
    5,345.57x = 7,376.70 × 2,987.66
  4. Step 4: Simplify right side
    5,345.57x = 22,039,071.52
  5. Step 5: Solve for x
    x = 22,039,071.52/5,345.57
  6. Step 6: Final answer
    x = 4,122.87

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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.