Home / 1,585.17-2,187.58-886.55

Finding the Fourth Proportional to 1,585.17, 2,187.58 and 886.55

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Solution

The fourth proportional to 1,585.17, 2,187.58 and 886.55 is: 1,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.17 : 2,187.58 = 886.55 : x
  2. Step 2: Convert to fraction form
    1,585.17/2,187.58 = 886.55/x
  3. Step 3: Cross multiply
    1,585.17x = 2,187.58 × 886.55
  4. Step 4: Simplify right side
    1,585.17x = 1,939,388.11
  5. Step 5: Solve for x
    x = 1,939,388.11/1,585.17
  6. Step 6: Final answer
    x = 1,223.46

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1.5x scale

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.