Home / 2,172.48-2,996.91-1,385.70

Finding the Fourth Proportional to 2,172.48, 2,996.91 and 1,385.70

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Solution

The fourth proportional to 2,172.48, 2,996.91 and 1,385.70 is: 1,911.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.48 : 2,996.91 = 1,385.70 : x
  2. Step 2: Convert to fraction form
    2,172.48/2,996.91 = 1,385.70/x
  3. Step 3: Cross multiply
    2,172.48x = 2,996.91 × 1,385.70
  4. Step 4: Simplify right side
    2,172.48x = 4,152,818.19
  5. Step 5: Solve for x
    x = 4,152,818.19/2,172.48
  6. Step 6: Final answer
    x = 1,911.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.