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Finding the Fourth Proportional to 5,287.79, 7,290.22 and 4,549.67

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Solution

The fourth proportional to 5,287.79, 7,290.22 and 4,549.67 is: 6,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.79 : 7,290.22 = 4,549.67 : x
  2. Step 2: Convert to fraction form
    5,287.79/7,290.22 = 4,549.67/x
  3. Step 3: Cross multiply
    5,287.79x = 7,290.22 × 4,549.67
  4. Step 4: Simplify right side
    5,287.79x = 33,168,095.23
  5. Step 5: Solve for x
    x = 33,168,095.23/5,287.79
  6. Step 6: Final answer
    x = 6,272.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.