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Finding the Fourth Proportional to 2,957.81, 4,080.24 and 2,398.91

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Solution

The fourth proportional to 2,957.81, 4,080.24 and 2,398.91 is: 3,309.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.81 : 4,080.24 = 2,398.91 : x
  2. Step 2: Convert to fraction form
    2,957.81/4,080.24 = 2,398.91/x
  3. Step 3: Cross multiply
    2,957.81x = 4,080.24 × 2,398.91
  4. Step 4: Simplify right side
    2,957.81x = 9,788,108.14
  5. Step 5: Solve for x
    x = 9,788,108.14/2,957.81
  6. Step 6: Final answer
    x = 3,309.25

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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.