Home / 1,871.16-2,582.20-1,085.66

Finding the Fourth Proportional to 1,871.16, 2,582.20 and 1,085.66

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Solution

The fourth proportional to 1,871.16, 2,582.20 and 1,085.66 is: 1,498.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.16 : 2,582.20 = 1,085.66 : x
  2. Step 2: Convert to fraction form
    1,871.16/2,582.20 = 1,085.66/x
  3. Step 3: Cross multiply
    1,871.16x = 2,582.20 × 1,085.66
  4. Step 4: Simplify right side
    1,871.16x = 2,803,391.25
  5. Step 5: Solve for x
    x = 2,803,391.25/1,871.16
  6. Step 6: Final answer
    x = 1,498.21

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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.