Home / 2,629.47-3,944.95-780.58

Finding the Fourth Proportional to 2,629.47, 3,944.95 and 780.58

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Solution

The fourth proportional to 2,629.47, 3,944.95 and 780.58 is: 1,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.47 : 3,944.95 = 780.58 : x
  2. Step 2: Convert to fraction form
    2,629.47/3,944.95 = 780.58/x
  3. Step 3: Cross multiply
    2,629.47x = 3,944.95 × 780.58
  4. Step 4: Simplify right side
    2,629.47x = 3,079,337.26
  5. Step 5: Solve for x
    x = 3,079,337.26/2,629.47
  6. Step 6: Final answer
    x = 1,171.09

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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.