Home / 3,156.47-4,355.86-1,830.14

Finding the Fourth Proportional to 3,156.47, 4,355.86 and 1,830.14

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Solution

The fourth proportional to 3,156.47, 4,355.86 and 1,830.14 is: 2,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.47 : 4,355.86 = 1,830.14 : x
  2. Step 2: Convert to fraction form
    3,156.47/4,355.86 = 1,830.14/x
  3. Step 3: Cross multiply
    3,156.47x = 4,355.86 × 1,830.14
  4. Step 4: Simplify right side
    3,156.47x = 7,971,833.62
  5. Step 5: Solve for x
    x = 7,971,833.62/3,156.47
  6. Step 6: Final answer
    x = 2,525.55

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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.