Home / 1,948.46-2,688.85-1,202.12

Finding the Fourth Proportional to 1,948.46, 2,688.85 and 1,202.12

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Solution

The fourth proportional to 1,948.46, 2,688.85 and 1,202.12 is: 1,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.46 : 2,688.85 = 1,202.12 : x
  2. Step 2: Convert to fraction form
    1,948.46/2,688.85 = 1,202.12/x
  3. Step 3: Cross multiply
    1,948.46x = 2,688.85 × 1,202.12
  4. Step 4: Simplify right side
    1,948.46x = 3,232,320.36
  5. Step 5: Solve for x
    x = 3,232,320.36/1,948.46
  6. Step 6: Final answer
    x = 1,658.91

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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.