Home / 2,435.68-3,361.28-1,387.76

Finding the Fourth Proportional to 2,435.68, 3,361.28 and 1,387.76

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Solution

The fourth proportional to 2,435.68, 3,361.28 and 1,387.76 is: 1,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.68 : 3,361.28 = 1,387.76 : x
  2. Step 2: Convert to fraction form
    2,435.68/3,361.28 = 1,387.76/x
  3. Step 3: Cross multiply
    2,435.68x = 3,361.28 × 1,387.76
  4. Step 4: Simplify right side
    2,435.68x = 4,664,649.93
  5. Step 5: Solve for x
    x = 4,664,649.93/2,435.68
  6. Step 6: Final answer
    x = 1,915.13

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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.