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Finding the Fourth Proportional to 5,920.64, 8,880.96 and 1,762.10

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Solution

The fourth proportional to 5,920.64, 8,880.96 and 1,762.10 is: 2,643.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.64 : 8,880.96 = 1,762.10 : x
  2. Step 2: Convert to fraction form
    5,920.64/8,880.96 = 1,762.10/x
  3. Step 3: Cross multiply
    5,920.64x = 8,880.96 × 1,762.10
  4. Step 4: Simplify right side
    5,920.64x = 15,649,175.17
  5. Step 5: Solve for x
    x = 15,649,175.17/5,920.64
  6. Step 6: Final answer
    x = 2,643.15

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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.