Home / 1,993.98-2,972.51-1,962.40

Finding the Fourth Proportional to 1,993.98, 2,972.51 and 1,962.40

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Solution

The fourth proportional to 1,993.98, 2,972.51 and 1,962.40 is: 2,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.98 : 2,972.51 = 1,962.40 : x
  2. Step 2: Convert to fraction form
    1,993.98/2,972.51 = 1,962.40/x
  3. Step 3: Cross multiply
    1,993.98x = 2,972.51 × 1,962.40
  4. Step 4: Simplify right side
    1,993.98x = 5,833,253.62
  5. Step 5: Solve for x
    x = 5,833,253.62/1,993.98
  6. Step 6: Final answer
    x = 2,925.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.