Home / 3,147.70-4,721.58-1,200.10

Finding the Fourth Proportional to 3,147.70, 4,721.58 and 1,200.10

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Solution

The fourth proportional to 3,147.70, 4,721.58 and 1,200.10 is: 1,800.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.70 : 4,721.58 = 1,200.10 : x
  2. Step 2: Convert to fraction form
    3,147.70/4,721.58 = 1,200.10/x
  3. Step 3: Cross multiply
    3,147.70x = 4,721.58 × 1,200.10
  4. Step 4: Simplify right side
    3,147.70x = 5,666,368.16
  5. Step 5: Solve for x
    x = 5,666,368.16/3,147.70
  6. Step 6: Final answer
    x = 1,800.16

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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.