Home / 1,623.40-2,438.70-1,580.20

Finding the Fourth Proportional to 1,623.40, 2,438.70 and 1,580.20

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Solution

The fourth proportional to 1,623.40, 2,438.70 and 1,580.20 is: 2,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.40 : 2,438.70 = 1,580.20 : x
  2. Step 2: Convert to fraction form
    1,623.40/2,438.70 = 1,580.20/x
  3. Step 3: Cross multiply
    1,623.40x = 2,438.70 × 1,580.20
  4. Step 4: Simplify right side
    1,623.40x = 3,853,633.74
  5. Step 5: Solve for x
    x = 3,853,633.74/1,623.40
  6. Step 6: Final answer
    x = 2,373.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.