Home / 4,140.08-5,711.52-2,645.36

Finding the Fourth Proportional to 4,140.08, 5,711.52 and 2,645.36

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Solution

The fourth proportional to 4,140.08, 5,711.52 and 2,645.36 is: 3,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.08 : 5,711.52 = 2,645.36 : x
  2. Step 2: Convert to fraction form
    4,140.08/5,711.52 = 2,645.36/x
  3. Step 3: Cross multiply
    4,140.08x = 5,711.52 × 2,645.36
  4. Step 4: Simplify right side
    4,140.08x = 15,109,026.55
  5. Step 5: Solve for x
    x = 15,109,026.55/4,140.08
  6. Step 6: Final answer
    x = 3,649.45

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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.