Home / 1,587.23-2,188.05-1,113.69

Finding the Fourth Proportional to 1,587.23, 2,188.05 and 1,113.69

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Solution

The fourth proportional to 1,587.23, 2,188.05 and 1,113.69 is: 1,535.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.23 : 2,188.05 = 1,113.69 : x
  2. Step 2: Convert to fraction form
    1,587.23/2,188.05 = 1,113.69/x
  3. Step 3: Cross multiply
    1,587.23x = 2,188.05 × 1,113.69
  4. Step 4: Simplify right side
    1,587.23x = 2,436,809.40
  5. Step 5: Solve for x
    x = 2,436,809.40/1,587.23
  6. Step 6: Final answer
    x = 1,535.26

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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.