Home / 3,140.05-4,703.69-2,520.40

Finding the Fourth Proportional to 3,140.05, 4,703.69 and 2,520.40

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Solution

The fourth proportional to 3,140.05, 4,703.69 and 2,520.40 is: 3,775.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.05 : 4,703.69 = 2,520.40 : x
  2. Step 2: Convert to fraction form
    3,140.05/4,703.69 = 2,520.40/x
  3. Step 3: Cross multiply
    3,140.05x = 4,703.69 × 2,520.40
  4. Step 4: Simplify right side
    3,140.05x = 11,855,144.16
  5. Step 5: Solve for x
    x = 11,855,144.16/3,140.05
  6. Step 6: Final answer
    x = 3,775.47

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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.