Home / 1,972.80-2,959.20-1,934.40

Finding the Fourth Proportional to 1,972.80, 2,959.20 and 1,934.40

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Solution

The fourth proportional to 1,972.80, 2,959.20 and 1,934.40 is: 2,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.80 : 2,959.20 = 1,934.40 : x
  2. Step 2: Convert to fraction form
    1,972.80/2,959.20 = 1,934.40/x
  3. Step 3: Cross multiply
    1,972.80x = 2,959.20 × 1,934.40
  4. Step 4: Simplify right side
    1,972.80x = 5,724,276.48
  5. Step 5: Solve for x
    x = 5,724,276.48/1,972.80
  6. Step 6: Final answer
    x = 2,901.60

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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.