Home / 9,315.45-12,856.05-5,337.54

Finding the Fourth Proportional to 9,315.45, 12,856.05 and 5,337.54

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Solution

The fourth proportional to 9,315.45, 12,856.05 and 5,337.54 is: 7,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.45 : 12,856.05 = 5,337.54 : x
  2. Step 2: Convert to fraction form
    9,315.45/12,856.05 = 5,337.54/x
  3. Step 3: Cross multiply
    9,315.45x = 12,856.05 × 5,337.54
  4. Step 4: Simplify right side
    9,315.45x = 68,619,681.12
  5. Step 5: Solve for x
    x = 68,619,681.12/9,315.45
  6. Step 6: Final answer
    x = 7,366.22

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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.