Home / 1,948.32-2,688.58-1,108.92

Finding the Fourth Proportional to 1,948.32, 2,688.58 and 1,108.92

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Solution

The fourth proportional to 1,948.32, 2,688.58 and 1,108.92 is: 1,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.32 : 2,688.58 = 1,108.92 : x
  2. Step 2: Convert to fraction form
    1,948.32/2,688.58 = 1,108.92/x
  3. Step 3: Cross multiply
    1,948.32x = 2,688.58 × 1,108.92
  4. Step 4: Simplify right side
    1,948.32x = 2,981,420.13
  5. Step 5: Solve for x
    x = 2,981,420.13/1,948.32
  6. Step 6: Final answer
    x = 1,530.25

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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.