Home / 2,154.24-2,972.16-1,326.72

Finding the Fourth Proportional to 2,154.24, 2,972.16 and 1,326.72

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Solution

The fourth proportional to 2,154.24, 2,972.16 and 1,326.72 is: 1,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.24 : 2,972.16 = 1,326.72 : x
  2. Step 2: Convert to fraction form
    2,154.24/2,972.16 = 1,326.72/x
  3. Step 3: Cross multiply
    2,154.24x = 2,972.16 × 1,326.72
  4. Step 4: Simplify right side
    2,154.24x = 3,943,224.12
  5. Step 5: Solve for x
    x = 3,943,224.12/2,154.24
  6. Step 6: Final answer
    x = 1,830.45

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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.