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Finding the Fourth Proportional to 3,665.58, 5,058.16 and 2,152.90

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Solution

The fourth proportional to 3,665.58, 5,058.16 and 2,152.90 is: 2,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.58 : 5,058.16 = 2,152.90 : x
  2. Step 2: Convert to fraction form
    3,665.58/5,058.16 = 2,152.90/x
  3. Step 3: Cross multiply
    3,665.58x = 5,058.16 × 2,152.90
  4. Step 4: Simplify right side
    3,665.58x = 10,889,712.66
  5. Step 5: Solve for x
    x = 10,889,712.66/3,665.58
  6. Step 6: Final answer
    x = 2,970.80

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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.