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Finding the Fourth Proportional to 2,548.80, 3,802.80 and 2,271.60

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Solution

The fourth proportional to 2,548.80, 3,802.80 and 2,271.60 is: 3,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,548.80 : 3,802.80 = 2,271.60 : x
  2. Step 2: Convert to fraction form
    2,548.80/3,802.80 = 2,271.60/x
  3. Step 3: Cross multiply
    2,548.80x = 3,802.80 × 2,271.60
  4. Step 4: Simplify right side
    2,548.80x = 8,638,440.48
  5. Step 5: Solve for x
    x = 8,638,440.48/2,548.80
  6. Step 6: Final answer
    x = 3,389.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.