Home / 1,870.40-2,581.14-1,031.11

Finding the Fourth Proportional to 1,870.40, 2,581.14 and 1,031.11

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Solution

The fourth proportional to 1,870.40, 2,581.14 and 1,031.11 is: 1,422.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.40 : 2,581.14 = 1,031.11 : x
  2. Step 2: Convert to fraction form
    1,870.40/2,581.14 = 1,031.11/x
  3. Step 3: Cross multiply
    1,870.40x = 2,581.14 × 1,031.11
  4. Step 4: Simplify right side
    1,870.40x = 2,661,439.27
  5. Step 5: Solve for x
    x = 2,661,439.27/1,870.40
  6. Step 6: Final answer
    x = 1,422.93

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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.