Home / 6,513.62-8,988.80-3,603.20

Finding the Fourth Proportional to 6,513.62, 8,988.80 and 3,603.20

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Solution

The fourth proportional to 6,513.62, 8,988.80 and 3,603.20 is: 4,972.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.62 : 8,988.80 = 3,603.20 : x
  2. Step 2: Convert to fraction form
    6,513.62/8,988.80 = 3,603.20/x
  3. Step 3: Cross multiply
    6,513.62x = 8,988.80 × 3,603.20
  4. Step 4: Simplify right side
    6,513.62x = 32,388,381.20
  5. Step 5: Solve for x
    x = 32,388,381.20/6,513.62
  6. Step 6: Final answer
    x = 4,972.41

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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.