Home / 1,320.12-1,970.88-1,010.34

Finding the Fourth Proportional to 1,320.12, 1,970.88 and 1,010.34

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Solution

The fourth proportional to 1,320.12, 1,970.88 and 1,010.34 is: 1,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.12 : 1,970.88 = 1,010.34 : x
  2. Step 2: Convert to fraction form
    1,320.12/1,970.88 = 1,010.34/x
  3. Step 3: Cross multiply
    1,320.12x = 1,970.88 × 1,010.34
  4. Step 4: Simplify right side
    1,320.12x = 1,991,258.90
  5. Step 5: Solve for x
    x = 1,991,258.90/1,320.12
  6. Step 6: Final answer
    x = 1,508.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.