Home / 1,929.32-2,662.45-1,045.12

Finding the Fourth Proportional to 1,929.32, 2,662.45 and 1,045.12

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Solution

The fourth proportional to 1,929.32, 2,662.45 and 1,045.12 is: 1,442.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.32 : 2,662.45 = 1,045.12 : x
  2. Step 2: Convert to fraction form
    1,929.32/2,662.45 = 1,045.12/x
  3. Step 3: Cross multiply
    1,929.32x = 2,662.45 × 1,045.12
  4. Step 4: Simplify right side
    1,929.32x = 2,782,570.48
  5. Step 5: Solve for x
    x = 2,782,570.48/1,929.32
  6. Step 6: Final answer
    x = 1,442.26

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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.