Home / 3,140.10-4,710.78-1,292.22

Finding the Fourth Proportional to 3,140.10, 4,710.78 and 1,292.22

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Solution

The fourth proportional to 3,140.10, 4,710.78 and 1,292.22 is: 1,938.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.10 : 4,710.78 = 1,292.22 : x
  2. Step 2: Convert to fraction form
    3,140.10/4,710.78 = 1,292.22/x
  3. Step 3: Cross multiply
    3,140.10x = 4,710.78 × 1,292.22
  4. Step 4: Simplify right side
    3,140.10x = 6,087,364.13
  5. Step 5: Solve for x
    x = 6,087,364.13/3,140.10
  6. Step 6: Final answer
    x = 1,938.59

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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.