Home / 1,929.80-2,662.40-1,332.42

Finding the Fourth Proportional to 1,929.80, 2,662.40 and 1,332.42

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Solution

The fourth proportional to 1,929.80, 2,662.40 and 1,332.42 is: 1,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.80 : 2,662.40 = 1,332.42 : x
  2. Step 2: Convert to fraction form
    1,929.80/2,662.40 = 1,332.42/x
  3. Step 3: Cross multiply
    1,929.80x = 2,662.40 × 1,332.42
  4. Step 4: Simplify right side
    1,929.80x = 3,547,435.01
  5. Step 5: Solve for x
    x = 3,547,435.01/1,929.80
  6. Step 6: Final answer
    x = 1,838.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.