Home / 1,870.20-2,580.99-1,031.09

Finding the Fourth Proportional to 1,870.20, 2,580.99 and 1,031.09

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Solution

The fourth proportional to 1,870.20, 2,580.99 and 1,031.09 is: 1,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.20 : 2,580.99 = 1,031.09 : x
  2. Step 2: Convert to fraction form
    1,870.20/2,580.99 = 1,031.09/x
  3. Step 3: Cross multiply
    1,870.20x = 2,580.99 × 1,031.09
  4. Step 4: Simplify right side
    1,870.20x = 2,661,219.11
  5. Step 5: Solve for x
    x = 2,661,219.11/1,870.20
  6. Step 6: Final answer
    x = 1,422.96

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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.