Home / 2,985.40-4,472.70-1,829.80

Finding the Fourth Proportional to 2,985.40, 4,472.70 and 1,829.80

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Solution

The fourth proportional to 2,985.40, 4,472.70 and 1,829.80 is: 2,741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.40 : 4,472.70 = 1,829.80 : x
  2. Step 2: Convert to fraction form
    2,985.40/4,472.70 = 1,829.80/x
  3. Step 3: Cross multiply
    2,985.40x = 4,472.70 × 1,829.80
  4. Step 4: Simplify right side
    2,985.40x = 8,184,146.46
  5. Step 5: Solve for x
    x = 8,184,146.46/2,985.40
  6. Step 6: Final answer
    x = 2,741.39

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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.