Home / 3,415.70-4,721.18-3,115.83

Finding the Fourth Proportional to 3,415.70, 4,721.18 and 3,115.83

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Solution

The fourth proportional to 3,415.70, 4,721.18 and 3,115.83 is: 4,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.70 : 4,721.18 = 3,115.83 : x
  2. Step 2: Convert to fraction form
    3,415.70/4,721.18 = 3,115.83/x
  3. Step 3: Cross multiply
    3,415.70x = 4,721.18 × 3,115.83
  4. Step 4: Simplify right side
    3,415.70x = 14,710,394.28
  5. Step 5: Solve for x
    x = 14,710,394.28/3,415.70
  6. Step 6: Final answer
    x = 4,306.70

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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.