Home / 5,345.39-7,376.79-2,987.48

Finding the Fourth Proportional to 5,345.39, 7,376.79 and 2,987.48

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Solution

The fourth proportional to 5,345.39, 7,376.79 and 2,987.48 is: 4,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.39 : 7,376.79 = 2,987.48 : x
  2. Step 2: Convert to fraction form
    5,345.39/7,376.79 = 2,987.48/x
  3. Step 3: Cross multiply
    5,345.39x = 7,376.79 × 2,987.48
  4. Step 4: Simplify right side
    5,345.39x = 22,037,975.71
  5. Step 5: Solve for x
    x = 22,037,975.71/5,345.39
  6. Step 6: Final answer
    x = 4,122.80

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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.