Home / 3,120.32-4,306.29-1,776.35

Finding the Fourth Proportional to 3,120.32, 4,306.29 and 1,776.35

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Solution

The fourth proportional to 3,120.32, 4,306.29 and 1,776.35 is: 2,451.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.32 : 4,306.29 = 1,776.35 : x
  2. Step 2: Convert to fraction form
    3,120.32/4,306.29 = 1,776.35/x
  3. Step 3: Cross multiply
    3,120.32x = 4,306.29 × 1,776.35
  4. Step 4: Simplify right side
    3,120.32x = 7,649,478.24
  5. Step 5: Solve for x
    x = 7,649,478.24/3,120.32
  6. Step 6: Final answer
    x = 2,451.50

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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.