Home / 1,587.08-2,190.40-888.50

Finding the Fourth Proportional to 1,587.08, 2,190.40 and 888.50

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Solution

The fourth proportional to 1,587.08, 2,190.40 and 888.50 is: 1,226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.08 : 2,190.40 = 888.50 : x
  2. Step 2: Convert to fraction form
    1,587.08/2,190.40 = 888.50/x
  3. Step 3: Cross multiply
    1,587.08x = 2,190.40 × 888.50
  4. Step 4: Simplify right side
    1,587.08x = 1,946,170.40
  5. Step 5: Solve for x
    x = 1,946,170.40/1,587.08
  6. Step 6: Final answer
    x = 1,226.26

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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.