Home / 6,515.89-8,991.47-3,683.40

Finding the Fourth Proportional to 6,515.89, 8,991.47 and 3,683.40

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Solution

The fourth proportional to 6,515.89, 8,991.47 and 3,683.40 is: 5,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.89 : 8,991.47 = 3,683.40 : x
  2. Step 2: Convert to fraction form
    6,515.89/8,991.47 = 3,683.40/x
  3. Step 3: Cross multiply
    6,515.89x = 8,991.47 × 3,683.40
  4. Step 4: Simplify right side
    6,515.89x = 33,119,156.09
  5. Step 5: Solve for x
    x = 33,119,156.09/6,515.89
  6. Step 6: Final answer
    x = 5,082.83

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1.5x scale

Why These Related Problems?

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