Home / 2,981.34-4,117.95-2,352.78

Finding the Fourth Proportional to 2,981.34, 4,117.95 and 2,352.78

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Solution

The fourth proportional to 2,981.34, 4,117.95 and 2,352.78 is: 3,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.34 : 4,117.95 = 2,352.78 : x
  2. Step 2: Convert to fraction form
    2,981.34/4,117.95 = 2,352.78/x
  3. Step 3: Cross multiply
    2,981.34x = 4,117.95 × 2,352.78
  4. Step 4: Simplify right side
    2,981.34x = 9,688,630.40
  5. Step 5: Solve for x
    x = 9,688,630.40/2,981.34
  6. Step 6: Final answer
    x = 3,249.76

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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.