Home / 8,709.45-12,019.28-5,124.66

Finding the Fourth Proportional to 8,709.45, 12,019.28 and 5,124.66

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Solution

The fourth proportional to 8,709.45, 12,019.28 and 5,124.66 is: 7,072.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.45 : 12,019.28 = 5,124.66 : x
  2. Step 2: Convert to fraction form
    8,709.45/12,019.28 = 5,124.66/x
  3. Step 3: Cross multiply
    8,709.45x = 12,019.28 × 5,124.66
  4. Step 4: Simplify right side
    8,709.45x = 61,594,697.82
  5. Step 5: Solve for x
    x = 61,594,697.82/8,709.45
  6. Step 6: Final answer
    x = 7,072.17

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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.