Home / 9,315.93-12,856.14-5,337.39

Finding the Fourth Proportional to 9,315.93, 12,856.14 and 5,337.39

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Solution

The fourth proportional to 9,315.93, 12,856.14 and 5,337.39 is: 7,365.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.93 : 12,856.14 = 5,337.39 : x
  2. Step 2: Convert to fraction form
    9,315.93/12,856.14 = 5,337.39/x
  3. Step 3: Cross multiply
    9,315.93x = 12,856.14 × 5,337.39
  4. Step 4: Simplify right side
    9,315.93x = 68,618,233.07
  5. Step 5: Solve for x
    x = 68,618,233.07/9,315.93
  6. Step 6: Final answer
    x = 7,365.69

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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.