Home / 3,156.18-4,356.78-2,037.20

Finding the Fourth Proportional to 3,156.18, 4,356.78 and 2,037.20

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Solution

The fourth proportional to 3,156.18, 4,356.78 and 2,037.20 is: 2,812.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.18 : 4,356.78 = 2,037.20 : x
  2. Step 2: Convert to fraction form
    3,156.18/4,356.78 = 2,037.20/x
  3. Step 3: Cross multiply
    3,156.18x = 4,356.78 × 2,037.20
  4. Step 4: Simplify right side
    3,156.18x = 8,875,632.22
  5. Step 5: Solve for x
    x = 8,875,632.22/3,156.18
  6. Step 6: Final answer
    x = 2,812.14

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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.