Home / 1,488.74-2,228.96-1,122.42

Finding the Fourth Proportional to 1,488.74, 2,228.96 and 1,122.42

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Solution

The fourth proportional to 1,488.74, 2,228.96 and 1,122.42 is: 1,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.74 : 2,228.96 = 1,122.42 : x
  2. Step 2: Convert to fraction form
    1,488.74/2,228.96 = 1,122.42/x
  3. Step 3: Cross multiply
    1,488.74x = 2,228.96 × 1,122.42
  4. Step 4: Simplify right side
    1,488.74x = 2,501,829.28
  5. Step 5: Solve for x
    x = 2,501,829.28/1,488.74
  6. Step 6: Final answer
    x = 1,680.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.