Home / 3,126.95-4,688.68-2,140.87

Finding the Fourth Proportional to 3,126.95, 4,688.68 and 2,140.87

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Solution

The fourth proportional to 3,126.95, 4,688.68 and 2,140.87 is: 3,210.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.95 : 4,688.68 = 2,140.87 : x
  2. Step 2: Convert to fraction form
    3,126.95/4,688.68 = 2,140.87/x
  3. Step 3: Cross multiply
    3,126.95x = 4,688.68 × 2,140.87
  4. Step 4: Simplify right side
    3,126.95x = 10,037,854.35
  5. Step 5: Solve for x
    x = 10,037,854.35/3,126.95
  6. Step 6: Final answer
    x = 3,210.11

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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.