Home / 1,403.53-1,952.35-1,376.80

Finding the Fourth Proportional to 1,403.53, 1,952.35 and 1,376.80

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Solution

The fourth proportional to 1,403.53, 1,952.35 and 1,376.80 is: 1,915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.53 : 1,952.35 = 1,376.80 : x
  2. Step 2: Convert to fraction form
    1,403.53/1,952.35 = 1,376.80/x
  3. Step 3: Cross multiply
    1,403.53x = 1,952.35 × 1,376.80
  4. Step 4: Simplify right side
    1,403.53x = 2,687,994.90
  5. Step 5: Solve for x
    x = 2,687,994.90/1,403.53
  6. Step 6: Final answer
    x = 1,915.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.