Home / 1,386.24-2,079.36-952.08

Finding the Fourth Proportional to 1,386.24, 2,079.36 and 952.08

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Solution

The fourth proportional to 1,386.24, 2,079.36 and 952.08 is: 1,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.24 : 2,079.36 = 952.08 : x
  2. Step 2: Convert to fraction form
    1,386.24/2,079.36 = 952.08/x
  3. Step 3: Cross multiply
    1,386.24x = 2,079.36 × 952.08
  4. Step 4: Simplify right side
    1,386.24x = 1,979,717.07
  5. Step 5: Solve for x
    x = 1,979,717.07/1,386.24
  6. Step 6: Final answer
    x = 1,428.12

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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.