Home / 1,588.80-2,192.55-890.18

Finding the Fourth Proportional to 1,588.80, 2,192.55 and 890.18

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Solution

The fourth proportional to 1,588.80, 2,192.55 and 890.18 is: 1,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.80 : 2,192.55 = 890.18 : x
  2. Step 2: Convert to fraction form
    1,588.80/2,192.55 = 890.18/x
  3. Step 3: Cross multiply
    1,588.80x = 2,192.55 × 890.18
  4. Step 4: Simplify right side
    1,588.80x = 1,951,764.16
  5. Step 5: Solve for x
    x = 1,951,764.16/1,588.80
  6. Step 6: Final answer
    x = 1,228.45

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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.