Home / 3,159.47-4,739.76-1,079.70

Finding the Fourth Proportional to 3,159.47, 4,739.76 and 1,079.70

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Solution

The fourth proportional to 3,159.47, 4,739.76 and 1,079.70 is: 1,619.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.47 : 4,739.76 = 1,079.70 : x
  2. Step 2: Convert to fraction form
    3,159.47/4,739.76 = 1,079.70/x
  3. Step 3: Cross multiply
    3,159.47x = 4,739.76 × 1,079.70
  4. Step 4: Simplify right side
    3,159.47x = 5,117,518.87
  5. Step 5: Solve for x
    x = 5,117,518.87/3,159.47
  6. Step 6: Final answer
    x = 1,619.74

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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.