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Finding the Fourth Proportional to 3,582.63, 5,374.04 and 985.55

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Solution

The fourth proportional to 3,582.63, 5,374.04 and 985.55 is: 1,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,582.63 : 5,374.04 = 985.55 : x
  2. Step 2: Convert to fraction form
    3,582.63/5,374.04 = 985.55/x
  3. Step 3: Cross multiply
    3,582.63x = 5,374.04 × 985.55
  4. Step 4: Simplify right side
    3,582.63x = 5,296,353.32
  5. Step 5: Solve for x
    x = 5,296,353.32/3,582.63
  6. Step 6: Final answer
    x = 1,478.34

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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.