Home / 4,138.18-5,705.65-3,605.10

Finding the Fourth Proportional to 4,138.18, 5,705.65 and 3,605.10

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Solution

The fourth proportional to 4,138.18, 5,705.65 and 3,605.10 is: 4,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.18 : 5,705.65 = 3,605.10 : x
  2. Step 2: Convert to fraction form
    4,138.18/5,705.65 = 3,605.10/x
  3. Step 3: Cross multiply
    4,138.18x = 5,705.65 × 3,605.10
  4. Step 4: Simplify right side
    4,138.18x = 20,569,438.82
  5. Step 5: Solve for x
    x = 20,569,438.82/4,138.18
  6. Step 6: Final answer
    x = 4,970.65

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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.