Home / 2,901.07-4,353.28-1,257.78

Finding the Fourth Proportional to 2,901.07, 4,353.28 and 1,257.78

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Solution

The fourth proportional to 2,901.07, 4,353.28 and 1,257.78 is: 1,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,901.07 : 4,353.28 = 1,257.78 : x
  2. Step 2: Convert to fraction form
    2,901.07/4,353.28 = 1,257.78/x
  3. Step 3: Cross multiply
    2,901.07x = 4,353.28 × 1,257.78
  4. Step 4: Simplify right side
    2,901.07x = 5,475,481.70
  5. Step 5: Solve for x
    x = 5,475,481.70/2,901.07
  6. Step 6: Final answer
    x = 1,887.40

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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.