Home / 2,148.05-2,963.10-1,308.95

Finding the Fourth Proportional to 2,148.05, 2,963.10 and 1,308.95

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Solution

The fourth proportional to 2,148.05, 2,963.10 and 1,308.95 is: 1,805.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.05 : 2,963.10 = 1,308.95 : x
  2. Step 2: Convert to fraction form
    2,148.05/2,963.10 = 1,308.95/x
  3. Step 3: Cross multiply
    2,148.05x = 2,963.10 × 1,308.95
  4. Step 4: Simplify right side
    2,148.05x = 3,878,534.93
  5. Step 5: Solve for x
    x = 3,878,534.93/2,148.05
  6. Step 6: Final answer
    x = 1,805.61

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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.