Home / 3,655.10-5,045.70-2,142.45

Finding the Fourth Proportional to 3,655.10, 5,045.70 and 2,142.45

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Solution

The fourth proportional to 3,655.10, 5,045.70 and 2,142.45 is: 2,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.10 : 5,045.70 = 2,142.45 : x
  2. Step 2: Convert to fraction form
    3,655.10/5,045.70 = 2,142.45/x
  3. Step 3: Cross multiply
    3,655.10x = 5,045.70 × 2,142.45
  4. Step 4: Simplify right side
    3,655.10x = 10,810,159.97
  5. Step 5: Solve for x
    x = 10,810,159.97/3,655.10
  6. Step 6: Final answer
    x = 2,957.56

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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.