Home / 2,312.52-3,190.28-1,415.55

Finding the Fourth Proportional to 2,312.52, 3,190.28 and 1,415.55

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Solution

The fourth proportional to 2,312.52, 3,190.28 and 1,415.55 is: 1,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.52 : 3,190.28 = 1,415.55 : x
  2. Step 2: Convert to fraction form
    2,312.52/3,190.28 = 1,415.55/x
  3. Step 3: Cross multiply
    2,312.52x = 3,190.28 × 1,415.55
  4. Step 4: Simplify right side
    2,312.52x = 4,516,000.85
  5. Step 5: Solve for x
    x = 4,516,000.85/2,312.52
  6. Step 6: Final answer
    x = 1,952.85

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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.