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Finding the Fourth Proportional to 2,987.52, 4,477.60 and 2,168.60

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Solution

The fourth proportional to 2,987.52, 4,477.60 and 2,168.60 is: 3,250.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.52 : 4,477.60 = 2,168.60 : x
  2. Step 2: Convert to fraction form
    2,987.52/4,477.60 = 2,168.60/x
  3. Step 3: Cross multiply
    2,987.52x = 4,477.60 × 2,168.60
  4. Step 4: Simplify right side
    2,987.52x = 9,710,123.36
  5. Step 5: Solve for x
    x = 9,710,123.36/2,987.52
  6. Step 6: Final answer
    x = 3,250.23

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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.