Home / 3,646.40-5,031.96-2,154.38

Finding the Fourth Proportional to 3,646.40, 5,031.96 and 2,154.38

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Solution

The fourth proportional to 3,646.40, 5,031.96 and 2,154.38 is: 2,973.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,646.40 : 5,031.96 = 2,154.38 : x
  2. Step 2: Convert to fraction form
    3,646.40/5,031.96 = 2,154.38/x
  3. Step 3: Cross multiply
    3,646.40x = 5,031.96 × 2,154.38
  4. Step 4: Simplify right side
    3,646.40x = 10,840,753.98
  5. Step 5: Solve for x
    x = 10,840,753.98/3,646.40
  6. Step 6: Final answer
    x = 2,973.00

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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.