Home / 2,985.20-4,119.63-1,658.96

Finding the Fourth Proportional to 2,985.20, 4,119.63 and 1,658.96

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Solution

The fourth proportional to 2,985.20, 4,119.63 and 1,658.96 is: 2,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.20 : 4,119.63 = 1,658.96 : x
  2. Step 2: Convert to fraction form
    2,985.20/4,119.63 = 1,658.96/x
  3. Step 3: Cross multiply
    2,985.20x = 4,119.63 × 1,658.96
  4. Step 4: Simplify right side
    2,985.20x = 6,834,301.38
  5. Step 5: Solve for x
    x = 6,834,301.38/2,985.20
  6. Step 6: Final answer
    x = 2,289.39

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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.