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Finding the Fourth Proportional to 4,918.76, 7,377.12 and 1,455.20

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Solution

The fourth proportional to 4,918.76, 7,377.12 and 1,455.20 is: 2,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.76 : 7,377.12 = 1,455.20 : x
  2. Step 2: Convert to fraction form
    4,918.76/7,377.12 = 1,455.20/x
  3. Step 3: Cross multiply
    4,918.76x = 7,377.12 × 1,455.20
  4. Step 4: Simplify right side
    4,918.76x = 10,735,185.02
  5. Step 5: Solve for x
    x = 10,735,185.02/4,918.76
  6. Step 6: Final answer
    x = 2,182.50

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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.