Home / 3,139.11-4,705.72-1,057.66

Finding the Fourth Proportional to 3,139.11, 4,705.72 and 1,057.66

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Solution

The fourth proportional to 3,139.11, 4,705.72 and 1,057.66 is: 1,585.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.11 : 4,705.72 = 1,057.66 : x
  2. Step 2: Convert to fraction form
    3,139.11/4,705.72 = 1,057.66/x
  3. Step 3: Cross multiply
    3,139.11x = 4,705.72 × 1,057.66
  4. Step 4: Simplify right side
    3,139.11x = 4,977,051.82
  5. Step 5: Solve for x
    x = 4,977,051.82/3,139.11
  6. Step 6: Final answer
    x = 1,585.50

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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.