Home / 2,951.40-4,428.13-1,309.10

Finding the Fourth Proportional to 2,951.40, 4,428.13 and 1,309.10

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Solution

The fourth proportional to 2,951.40, 4,428.13 and 1,309.10 is: 1,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.40 : 4,428.13 = 1,309.10 : x
  2. Step 2: Convert to fraction form
    2,951.40/4,428.13 = 1,309.10/x
  3. Step 3: Cross multiply
    2,951.40x = 4,428.13 × 1,309.10
  4. Step 4: Simplify right side
    2,951.40x = 5,796,858.44
  5. Step 5: Solve for x
    x = 5,796,858.44/2,951.40
  6. Step 6: Final answer
    x = 1,964.10

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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.