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Finding the Fourth Proportional to 2,855.68, 3,931.52 and 2,440.96

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Solution

The fourth proportional to 2,855.68, 3,931.52 and 2,440.96 is: 3,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.68 : 3,931.52 = 2,440.96 : x
  2. Step 2: Convert to fraction form
    2,855.68/3,931.52 = 2,440.96/x
  3. Step 3: Cross multiply
    2,855.68x = 3,931.52 × 2,440.96
  4. Step 4: Simplify right side
    2,855.68x = 9,596,683.06
  5. Step 5: Solve for x
    x = 9,596,683.06/2,855.68
  6. Step 6: Final answer
    x = 3,360.56

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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.