Home / 1,765.32-2,436.10-979.35

Finding the Fourth Proportional to 1,765.32, 2,436.10 and 979.35

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Solution

The fourth proportional to 1,765.32, 2,436.10 and 979.35 is: 1,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.32 : 2,436.10 = 979.35 : x
  2. Step 2: Convert to fraction form
    1,765.32/2,436.10 = 979.35/x
  3. Step 3: Cross multiply
    1,765.32x = 2,436.10 × 979.35
  4. Step 4: Simplify right side
    1,765.32x = 2,385,794.54
  5. Step 5: Solve for x
    x = 2,385,794.54/1,765.32
  6. Step 6: Final answer
    x = 1,351.48

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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.