Home / 1,712.40-2,361.51-1,380.66

Finding the Fourth Proportional to 1,712.40, 2,361.51 and 1,380.66

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Solution

The fourth proportional to 1,712.40, 2,361.51 and 1,380.66 is: 1,904.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.40 : 2,361.51 = 1,380.66 : x
  2. Step 2: Convert to fraction form
    1,712.40/2,361.51 = 1,380.66/x
  3. Step 3: Cross multiply
    1,712.40x = 2,361.51 × 1,380.66
  4. Step 4: Simplify right side
    1,712.40x = 3,260,442.40
  5. Step 5: Solve for x
    x = 3,260,442.40/1,712.40
  6. Step 6: Final answer
    x = 1,904.02

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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.