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Finding the Fourth Proportional to 9,316, 12,856.86 and 5,125.12

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Solution

The fourth proportional to 9,316, 12,856.86 and 5,125.12 is: 7,073.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316 : 12,856.86 = 5,125.12 : x
  2. Step 2: Convert to fraction form
    9,316/12,856.86 = 5,125.12/x
  3. Step 3: Cross multiply
    9,316x = 12,856.86 × 5,125.12
  4. Step 4: Simplify right side
    9,316x = 65,892,950.32
  5. Step 5: Solve for x
    x = 65,892,950.32/9,316
  6. Step 6: Final answer
    x = 7,073.09

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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.