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Finding the Fourth Proportional to 1,246.20, 1,866.60 and 1,246.20

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Solution

The fourth proportional to 1,246.20, 1,866.60 and 1,246.20 is: 1,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.20 : 1,866.60 = 1,246.20 : x
  2. Step 2: Convert to fraction form
    1,246.20/1,866.60 = 1,246.20/x
  3. Step 3: Cross multiply
    1,246.20x = 1,866.60 × 1,246.20
  4. Step 4: Simplify right side
    1,246.20x = 2,326,156.92
  5. Step 5: Solve for x
    x = 2,326,156.92/1,246.20
  6. Step 6: Final answer
    x = 1,866.60

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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.