Home / 3,117.79-4,676.69-2,140.93

Finding the Fourth Proportional to 3,117.79, 4,676.69 and 2,140.93

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Solution

The fourth proportional to 3,117.79, 4,676.69 and 2,140.93 is: 3,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.79 : 4,676.69 = 2,140.93 : x
  2. Step 2: Convert to fraction form
    3,117.79/4,676.69 = 2,140.93/x
  3. Step 3: Cross multiply
    3,117.79x = 4,676.69 × 2,140.93
  4. Step 4: Simplify right side
    3,117.79x = 10,012,465.92
  5. Step 5: Solve for x
    x = 10,012,465.92/3,117.79
  6. Step 6: Final answer
    x = 3,211.40

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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.