Home / 2,985.72-4,118.76-1,743

Finding the Fourth Proportional to 2,985.72, 4,118.76 and 1,743

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Solution

The fourth proportional to 2,985.72, 4,118.76 and 1,743 is: 2,404.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.72 : 4,118.76 = 1,743 : x
  2. Step 2: Convert to fraction form
    2,985.72/4,118.76 = 1,743/x
  3. Step 3: Cross multiply
    2,985.72x = 4,118.76 × 1,743
  4. Step 4: Simplify right side
    2,985.72x = 7,178,998.68
  5. Step 5: Solve for x
    x = 7,178,998.68/2,985.72
  6. Step 6: Final answer
    x = 2,404.44

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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.