Home / 3,490.84-4,815.66-2,312.90

Finding the Fourth Proportional to 3,490.84, 4,815.66 and 2,312.90

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Solution

The fourth proportional to 3,490.84, 4,815.66 and 2,312.90 is: 3,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.84 : 4,815.66 = 2,312.90 : x
  2. Step 2: Convert to fraction form
    3,490.84/4,815.66 = 2,312.90/x
  3. Step 3: Cross multiply
    3,490.84x = 4,815.66 × 2,312.90
  4. Step 4: Simplify right side
    3,490.84x = 11,138,140.01
  5. Step 5: Solve for x
    x = 11,138,140.01/3,490.84
  6. Step 6: Final answer
    x = 3,190.68

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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.