Home / 2,031.40-3,046.08-991.48

Finding the Fourth Proportional to 2,031.40, 3,046.08 and 991.48

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Solution

The fourth proportional to 2,031.40, 3,046.08 and 991.48 is: 1,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.40 : 3,046.08 = 991.48 : x
  2. Step 2: Convert to fraction form
    2,031.40/3,046.08 = 991.48/x
  3. Step 3: Cross multiply
    2,031.40x = 3,046.08 × 991.48
  4. Step 4: Simplify right side
    2,031.40x = 3,020,127.40
  5. Step 5: Solve for x
    x = 3,020,127.40/2,031.40
  6. Step 6: Final answer
    x = 1,486.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.