Home / 2,985.20-4,119.53-1,658.87

Finding the Fourth Proportional to 2,985.20, 4,119.53 and 1,658.87

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Solution

The fourth proportional to 2,985.20, 4,119.53 and 1,658.87 is: 2,289.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.20 : 4,119.53 = 1,658.87 : x
  2. Step 2: Convert to fraction form
    2,985.20/4,119.53 = 1,658.87/x
  3. Step 3: Cross multiply
    2,985.20x = 4,119.53 × 1,658.87
  4. Step 4: Simplify right side
    2,985.20x = 6,833,779.18
  5. Step 5: Solve for x
    x = 6,833,779.18/2,985.20
  6. Step 6: Final answer
    x = 2,289.22

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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.