Home / 3,780.46-5,670.33-1,315.18

Finding the Fourth Proportional to 3,780.46, 5,670.33 and 1,315.18

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Solution

The fourth proportional to 3,780.46, 5,670.33 and 1,315.18 is: 1,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.46 : 5,670.33 = 1,315.18 : x
  2. Step 2: Convert to fraction form
    3,780.46/5,670.33 = 1,315.18/x
  3. Step 3: Cross multiply
    3,780.46x = 5,670.33 × 1,315.18
  4. Step 4: Simplify right side
    3,780.46x = 7,457,504.61
  5. Step 5: Solve for x
    x = 7,457,504.61/3,780.46
  6. Step 6: Final answer
    x = 1,972.64

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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.