Home / 3,123.12-4,312.53-2,601.90

Finding the Fourth Proportional to 3,123.12, 4,312.53 and 2,601.90

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Solution

The fourth proportional to 3,123.12, 4,312.53 and 2,601.90 is: 3,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.12 : 4,312.53 = 2,601.90 : x
  2. Step 2: Convert to fraction form
    3,123.12/4,312.53 = 2,601.90/x
  3. Step 3: Cross multiply
    3,123.12x = 4,312.53 × 2,601.90
  4. Step 4: Simplify right side
    3,123.12x = 11,220,771.81
  5. Step 5: Solve for x
    x = 11,220,771.81/3,123.12
  6. Step 6: Final answer
    x = 3,592.81

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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.