Home / 3,167.52-4,373.28-1,990.40

Finding the Fourth Proportional to 3,167.52, 4,373.28 and 1,990.40

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Solution

The fourth proportional to 3,167.52, 4,373.28 and 1,990.40 is: 2,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.52 : 4,373.28 = 1,990.40 : x
  2. Step 2: Convert to fraction form
    3,167.52/4,373.28 = 1,990.40/x
  3. Step 3: Cross multiply
    3,167.52x = 4,373.28 × 1,990.40
  4. Step 4: Simplify right side
    3,167.52x = 8,704,576.51
  5. Step 5: Solve for x
    x = 8,704,576.51/3,167.52
  6. Step 6: Final answer
    x = 2,748.07

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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.