Home / 2,031.10-3,045.60-991.24

Finding the Fourth Proportional to 2,031.10, 3,045.60 and 991.24

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Solution

The fourth proportional to 2,031.10, 3,045.60 and 991.24 is: 1,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.10 : 3,045.60 = 991.24 : x
  2. Step 2: Convert to fraction form
    2,031.10/3,045.60 = 991.24/x
  3. Step 3: Cross multiply
    2,031.10x = 3,045.60 × 991.24
  4. Step 4: Simplify right side
    2,031.10x = 3,018,920.54
  5. Step 5: Solve for x
    x = 3,018,920.54/2,031.10
  6. Step 6: Final answer
    x = 1,486.35

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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.