Home / 2,117.50-3,177.60-1,631.50

Finding the Fourth Proportional to 2,117.50, 3,177.60 and 1,631.50

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Solution

The fourth proportional to 2,117.50, 3,177.60 and 1,631.50 is: 2,448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.50 : 3,177.60 = 1,631.50 : x
  2. Step 2: Convert to fraction form
    2,117.50/3,177.60 = 1,631.50/x
  3. Step 3: Cross multiply
    2,117.50x = 3,177.60 × 1,631.50
  4. Step 4: Simplify right side
    2,117.50x = 5,184,254.40
  5. Step 5: Solve for x
    x = 5,184,254.40/2,117.50
  6. Step 6: Final answer
    x = 2,448.29

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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.