Home / 5,417.70-8,127.76-1,720.05

Finding the Fourth Proportional to 5,417.70, 8,127.76 and 1,720.05

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Solution

The fourth proportional to 5,417.70, 8,127.76 and 1,720.05 is: 2,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.70 : 8,127.76 = 1,720.05 : x
  2. Step 2: Convert to fraction form
    5,417.70/8,127.76 = 1,720.05/x
  3. Step 3: Cross multiply
    5,417.70x = 8,127.76 × 1,720.05
  4. Step 4: Simplify right side
    5,417.70x = 13,980,112.95
  5. Step 5: Solve for x
    x = 13,980,112.95/5,417.70
  6. Step 6: Final answer
    x = 2,580.45

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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.