Home / 1,979.28-2,970.81-1,006.11

Finding the Fourth Proportional to 1,979.28, 2,970.81 and 1,006.11

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Solution

The fourth proportional to 1,979.28, 2,970.81 and 1,006.11 is: 1,510.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.28 : 2,970.81 = 1,006.11 : x
  2. Step 2: Convert to fraction form
    1,979.28/2,970.81 = 1,006.11/x
  3. Step 3: Cross multiply
    1,979.28x = 2,970.81 × 1,006.11
  4. Step 4: Simplify right side
    1,979.28x = 2,988,961.65
  5. Step 5: Solve for x
    x = 2,988,961.65/1,979.28
  6. Step 6: Final answer
    x = 1,510.13

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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.