Home / 5,140.71-7,094.16-2,782.85

Finding the Fourth Proportional to 5,140.71, 7,094.16 and 2,782.85

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Solution

The fourth proportional to 5,140.71, 7,094.16 and 2,782.85 is: 3,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.71 : 7,094.16 = 2,782.85 : x
  2. Step 2: Convert to fraction form
    5,140.71/7,094.16 = 2,782.85/x
  3. Step 3: Cross multiply
    5,140.71x = 7,094.16 × 2,782.85
  4. Step 4: Simplify right side
    5,140.71x = 19,741,947.69
  5. Step 5: Solve for x
    x = 19,741,947.69/5,140.71
  6. Step 6: Final answer
    x = 3,840.32

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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.