Home / 6,515.49-8,991.16-3,861.32

Finding the Fourth Proportional to 6,515.49, 8,991.16 and 3,861.32

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Solution

The fourth proportional to 6,515.49, 8,991.16 and 3,861.32 is: 5,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.49 : 8,991.16 = 3,861.32 : x
  2. Step 2: Convert to fraction form
    6,515.49/8,991.16 = 3,861.32/x
  3. Step 3: Cross multiply
    6,515.49x = 8,991.16 × 3,861.32
  4. Step 4: Simplify right side
    6,515.49x = 34,717,758.76
  5. Step 5: Solve for x
    x = 34,717,758.76/6,515.49
  6. Step 6: Final answer
    x = 5,328.50

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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.