Home / 1,548.40-2,319.90-1,305.40

Finding the Fourth Proportional to 1,548.40, 2,319.90 and 1,305.40

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Solution

The fourth proportional to 1,548.40, 2,319.90 and 1,305.40 is: 1,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.40 : 2,319.90 = 1,305.40 : x
  2. Step 2: Convert to fraction form
    1,548.40/2,319.90 = 1,305.40/x
  3. Step 3: Cross multiply
    1,548.40x = 2,319.90 × 1,305.40
  4. Step 4: Simplify right side
    1,548.40x = 3,028,397.46
  5. Step 5: Solve for x
    x = 3,028,397.46/1,548.40
  6. Step 6: Final answer
    x = 1,955.82

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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.