Home / 3,780.18-5,671.53-1,315.62

Finding the Fourth Proportional to 3,780.18, 5,671.53 and 1,315.62

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Solution

The fourth proportional to 3,780.18, 5,671.53 and 1,315.62 is: 1,973.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.18 : 5,671.53 = 1,315.62 : x
  2. Step 2: Convert to fraction form
    3,780.18/5,671.53 = 1,315.62/x
  3. Step 3: Cross multiply
    3,780.18x = 5,671.53 × 1,315.62
  4. Step 4: Simplify right side
    3,780.18x = 7,461,578.30
  5. Step 5: Solve for x
    x = 7,461,578.30/3,780.18
  6. Step 6: Final answer
    x = 1,973.87

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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.