Home / 1,362.24-2,038.32-1,320

Finding the Fourth Proportional to 1,362.24, 2,038.32 and 1,320

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Solution

The fourth proportional to 1,362.24, 2,038.32 and 1,320 is: 1,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.24 : 2,038.32 = 1,320 : x
  2. Step 2: Convert to fraction form
    1,362.24/2,038.32 = 1,320/x
  3. Step 3: Cross multiply
    1,362.24x = 2,038.32 × 1,320
  4. Step 4: Simplify right side
    1,362.24x = 2,690,582.40
  5. Step 5: Solve for x
    x = 2,690,582.40/1,362.24
  6. Step 6: Final answer
    x = 1,975.12

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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.