Home / 3,130.47-4,320.56-1,803.95

Finding the Fourth Proportional to 3,130.47, 4,320.56 and 1,803.95

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Solution

The fourth proportional to 3,130.47, 4,320.56 and 1,803.95 is: 2,489.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.47 : 4,320.56 = 1,803.95 : x
  2. Step 2: Convert to fraction form
    3,130.47/4,320.56 = 1,803.95/x
  3. Step 3: Cross multiply
    3,130.47x = 4,320.56 × 1,803.95
  4. Step 4: Simplify right side
    3,130.47x = 7,794,074.21
  5. Step 5: Solve for x
    x = 7,794,074.21/3,130.47
  6. Step 6: Final answer
    x = 2,489.75

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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.