Home / 1,587.81-2,204.38-1,540.29

Finding the Fourth Proportional to 1,587.81, 2,204.38 and 1,540.29

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Solution

The fourth proportional to 1,587.81, 2,204.38 and 1,540.29 is: 2,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.81 : 2,204.38 = 1,540.29 : x
  2. Step 2: Convert to fraction form
    1,587.81/2,204.38 = 1,540.29/x
  3. Step 3: Cross multiply
    1,587.81x = 2,204.38 × 1,540.29
  4. Step 4: Simplify right side
    1,587.81x = 3,395,376.77
  5. Step 5: Solve for x
    x = 3,395,376.77/1,587.81
  6. Step 6: Final answer
    x = 2,138.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.