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Finding the Fourth Proportional to 2,959.47, 4,436.21 and 1,920.13

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Solution

The fourth proportional to 2,959.47, 4,436.21 and 1,920.13 is: 2,878.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.47 : 4,436.21 = 1,920.13 : x
  2. Step 2: Convert to fraction form
    2,959.47/4,436.21 = 1,920.13/x
  3. Step 3: Cross multiply
    2,959.47x = 4,436.21 × 1,920.13
  4. Step 4: Simplify right side
    2,959.47x = 8,518,093.62
  5. Step 5: Solve for x
    x = 8,518,093.62/2,959.47
  6. Step 6: Final answer
    x = 2,878.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.