Home / 3,127.15-4,315.53-1,869.50

Finding the Fourth Proportional to 3,127.15, 4,315.53 and 1,869.50

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Solution

The fourth proportional to 3,127.15, 4,315.53 and 1,869.50 is: 2,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.15 : 4,315.53 = 1,869.50 : x
  2. Step 2: Convert to fraction form
    3,127.15/4,315.53 = 1,869.50/x
  3. Step 3: Cross multiply
    3,127.15x = 4,315.53 × 1,869.50
  4. Step 4: Simplify right side
    3,127.15x = 8,067,894.12
  5. Step 5: Solve for x
    x = 8,067,894.12/3,127.15
  6. Step 6: Final answer
    x = 2,579.95

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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.