Home / 1,609.40-2,220.28-1,011.52

Finding the Fourth Proportional to 1,609.40, 2,220.28 and 1,011.52

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Solution

The fourth proportional to 1,609.40, 2,220.28 and 1,011.52 is: 1,395.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.40 : 2,220.28 = 1,011.52 : x
  2. Step 2: Convert to fraction form
    1,609.40/2,220.28 = 1,011.52/x
  3. Step 3: Cross multiply
    1,609.40x = 2,220.28 × 1,011.52
  4. Step 4: Simplify right side
    1,609.40x = 2,245,857.63
  5. Step 5: Solve for x
    x = 2,245,857.63/1,609.40
  6. Step 6: Final answer
    x = 1,395.46

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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.