Home / 2,435.60-3,361.20-1,387.68

Finding the Fourth Proportional to 2,435.60, 3,361.20 and 1,387.68

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Solution

The fourth proportional to 2,435.60, 3,361.20 and 1,387.68 is: 1,915.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.60 : 3,361.20 = 1,387.68 : x
  2. Step 2: Convert to fraction form
    2,435.60/3,361.20 = 1,387.68/x
  3. Step 3: Cross multiply
    2,435.60x = 3,361.20 × 1,387.68
  4. Step 4: Simplify right side
    2,435.60x = 4,664,270.02
  5. Step 5: Solve for x
    x = 4,664,270.02/2,435.60
  6. Step 6: Final answer
    x = 1,915.04

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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.