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Finding the Fourth Proportional to 4,857.40, 7,287.90 and 1,570.60

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Solution

The fourth proportional to 4,857.40, 7,287.90 and 1,570.60 is: 2,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,857.40 : 7,287.90 = 1,570.60 : x
  2. Step 2: Convert to fraction form
    4,857.40/7,287.90 = 1,570.60/x
  3. Step 3: Cross multiply
    4,857.40x = 7,287.90 × 1,570.60
  4. Step 4: Simplify right side
    4,857.40x = 11,446,375.74
  5. Step 5: Solve for x
    x = 11,446,375.74/4,857.40
  6. Step 6: Final answer
    x = 2,356.48

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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.