Home / 1,548.30-2,320.70-768.86

Finding the Fourth Proportional to 1,548.30, 2,320.70 and 768.86

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Solution

The fourth proportional to 1,548.30, 2,320.70 and 768.86 is: 1,152.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.30 : 2,320.70 = 768.86 : x
  2. Step 2: Convert to fraction form
    1,548.30/2,320.70 = 768.86/x
  3. Step 3: Cross multiply
    1,548.30x = 2,320.70 × 768.86
  4. Step 4: Simplify right side
    1,548.30x = 1,784,277.95
  5. Step 5: Solve for x
    x = 1,784,277.95/1,548.30
  6. Step 6: Final answer
    x = 1,152.41

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1.5x scale

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.