Home / 1,964.40-2,946.30-1,275.95

Finding the Fourth Proportional to 1,964.40, 2,946.30 and 1,275.95

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Solution

The fourth proportional to 1,964.40, 2,946.30 and 1,275.95 is: 1,913.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.40 : 2,946.30 = 1,275.95 : x
  2. Step 2: Convert to fraction form
    1,964.40/2,946.30 = 1,275.95/x
  3. Step 3: Cross multiply
    1,964.40x = 2,946.30 × 1,275.95
  4. Step 4: Simplify right side
    1,964.40x = 3,759,331.49
  5. Step 5: Solve for x
    x = 3,759,331.49/1,964.40
  6. Step 6: Final answer
    x = 1,913.73

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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.