Home / 5,272.54-7,909.76-1,762.20

Finding the Fourth Proportional to 5,272.54, 7,909.76 and 1,762.20

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Solution

The fourth proportional to 5,272.54, 7,909.76 and 1,762.20 is: 2,643.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.54 : 7,909.76 = 1,762.20 : x
  2. Step 2: Convert to fraction form
    5,272.54/7,909.76 = 1,762.20/x
  3. Step 3: Cross multiply
    5,272.54x = 7,909.76 × 1,762.20
  4. Step 4: Simplify right side
    5,272.54x = 13,938,579.07
  5. Step 5: Solve for x
    x = 13,938,579.07/5,272.54
  6. Step 6: Final answer
    x = 2,643.62

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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.