Home / 5,317.50-7,977.40-1,620.02

Finding the Fourth Proportional to 5,317.50, 7,977.40 and 1,620.02

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Solution

The fourth proportional to 5,317.50, 7,977.40 and 1,620.02 is: 2,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.50 : 7,977.40 = 1,620.02 : x
  2. Step 2: Convert to fraction form
    5,317.50/7,977.40 = 1,620.02/x
  3. Step 3: Cross multiply
    5,317.50x = 7,977.40 × 1,620.02
  4. Step 4: Simplify right side
    5,317.50x = 12,923,547.55
  5. Step 5: Solve for x
    x = 12,923,547.55/5,317.50
  6. Step 6: Final answer
    x = 2,430.38

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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.