Home / 8,681.58-13,012.45-5,396.90

Finding the Fourth Proportional to 8,681.58, 13,012.45 and 5,396.90

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Solution

The fourth proportional to 8,681.58, 13,012.45 and 5,396.90 is: 8,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.58 : 13,012.45 = 5,396.90 : x
  2. Step 2: Convert to fraction form
    8,681.58/13,012.45 = 5,396.90/x
  3. Step 3: Cross multiply
    8,681.58x = 13,012.45 × 5,396.90
  4. Step 4: Simplify right side
    8,681.58x = 70,226,812.85
  5. Step 5: Solve for x
    x = 70,226,812.85/8,681.58
  6. Step 6: Final answer
    x = 8,089.17

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1.5x scale

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.