Home / 3,070.30-4,605.47-1,121.70

Finding the Fourth Proportional to 3,070.30, 4,605.47 and 1,121.70

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Solution

The fourth proportional to 3,070.30, 4,605.47 and 1,121.70 is: 1,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.30 : 4,605.47 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    3,070.30/4,605.47 = 1,121.70/x
  3. Step 3: Cross multiply
    3,070.30x = 4,605.47 × 1,121.70
  4. Step 4: Simplify right side
    3,070.30x = 5,165,955.70
  5. Step 5: Solve for x
    x = 5,165,955.70/3,070.30
  6. Step 6: Final answer
    x = 1,682.56

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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.