Home / 1,718.79-2,372.27-972.75

Finding the Fourth Proportional to 1,718.79, 2,372.27 and 972.75

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Solution

The fourth proportional to 1,718.79, 2,372.27 and 972.75 is: 1,342.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.79 : 2,372.27 = 972.75 : x
  2. Step 2: Convert to fraction form
    1,718.79/2,372.27 = 972.75/x
  3. Step 3: Cross multiply
    1,718.79x = 2,372.27 × 972.75
  4. Step 4: Simplify right side
    1,718.79x = 2,307,625.64
  5. Step 5: Solve for x
    x = 2,307,625.64/1,718.79
  6. Step 6: Final answer
    x = 1,342.59

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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.