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Finding the Fourth Proportional to 3,985.55, 5,973.50 and 1,484.72

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Solution

The fourth proportional to 3,985.55, 5,973.50 and 1,484.72 is: 2,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.55 : 5,973.50 = 1,484.72 : x
  2. Step 2: Convert to fraction form
    3,985.55/5,973.50 = 1,484.72/x
  3. Step 3: Cross multiply
    3,985.55x = 5,973.50 × 1,484.72
  4. Step 4: Simplify right side
    3,985.55x = 8,868,948.76
  5. Step 5: Solve for x
    x = 8,868,948.76/3,985.55
  6. Step 6: Final answer
    x = 2,225.27

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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.