Home / 1,929.30-2,662.40-1,045.13

Finding the Fourth Proportional to 1,929.30, 2,662.40 and 1,045.13

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Solution

The fourth proportional to 1,929.30, 2,662.40 and 1,045.13 is: 1,442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.30 : 2,662.40 = 1,045.13 : x
  2. Step 2: Convert to fraction form
    1,929.30/2,662.40 = 1,045.13/x
  3. Step 3: Cross multiply
    1,929.30x = 2,662.40 × 1,045.13
  4. Step 4: Simplify right side
    1,929.30x = 2,782,535.57
  5. Step 5: Solve for x
    x = 2,782,535.57/1,929.30
  6. Step 6: Final answer
    x = 1,442.25

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1.5x scale

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.