Home / 1,587.66-2,191.47-1,505.10

Finding the Fourth Proportional to 1,587.66, 2,191.47 and 1,505.10

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Solution

The fourth proportional to 1,587.66, 2,191.47 and 1,505.10 is: 2,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.66 : 2,191.47 = 1,505.10 : x
  2. Step 2: Convert to fraction form
    1,587.66/2,191.47 = 1,505.10/x
  3. Step 3: Cross multiply
    1,587.66x = 2,191.47 × 1,505.10
  4. Step 4: Simplify right side
    1,587.66x = 3,298,381.50
  5. Step 5: Solve for x
    x = 3,298,381.50/1,587.66
  6. Step 6: Final answer
    x = 2,077.51

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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.