Home / 1,870.99-2,582.09-1,240.43

Finding the Fourth Proportional to 1,870.99, 2,582.09 and 1,240.43

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Solution

The fourth proportional to 1,870.99, 2,582.09 and 1,240.43 is: 1,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.99 : 2,582.09 = 1,240.43 : x
  2. Step 2: Convert to fraction form
    1,870.99/2,582.09 = 1,240.43/x
  3. Step 3: Cross multiply
    1,870.99x = 2,582.09 × 1,240.43
  4. Step 4: Simplify right side
    1,870.99x = 3,202,901.90
  5. Step 5: Solve for x
    x = 3,202,901.90/1,870.99
  6. Step 6: Final answer
    x = 1,711.88

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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.