Home / 6,513.78-8,988.99-3,529.69

Finding the Fourth Proportional to 6,513.78, 8,988.99 and 3,529.69

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Solution

The fourth proportional to 6,513.78, 8,988.99 and 3,529.69 is: 4,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.78 : 8,988.99 = 3,529.69 : x
  2. Step 2: Convert to fraction form
    6,513.78/8,988.99 = 3,529.69/x
  3. Step 3: Cross multiply
    6,513.78x = 8,988.99 × 3,529.69
  4. Step 4: Simplify right side
    6,513.78x = 31,728,348.11
  5. Step 5: Solve for x
    x = 31,728,348.11/6,513.78
  6. Step 6: Final answer
    x = 4,870.96

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Half scale
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Double scale
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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.