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Finding the Fourth Proportional to 4,807.90, 7,207.80 and 2,499.40

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Solution

The fourth proportional to 4,807.90, 7,207.80 and 2,499.40 is: 3,746.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.90 : 7,207.80 = 2,499.40 : x
  2. Step 2: Convert to fraction form
    4,807.90/7,207.80 = 2,499.40/x
  3. Step 3: Cross multiply
    4,807.90x = 7,207.80 × 2,499.40
  4. Step 4: Simplify right side
    4,807.90x = 18,015,175.32
  5. Step 5: Solve for x
    x = 18,015,175.32/4,807.90
  6. Step 6: Final answer
    x = 3,746.99

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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.