Home / 9,360.36-12,915.91-5,380.70

Finding the Fourth Proportional to 9,360.36, 12,915.91 and 5,380.70

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Solution

The fourth proportional to 9,360.36, 12,915.91 and 5,380.70 is: 7,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.36 : 12,915.91 = 5,380.70 : x
  2. Step 2: Convert to fraction form
    9,360.36/12,915.91 = 5,380.70/x
  3. Step 3: Cross multiply
    9,360.36x = 12,915.91 × 5,380.70
  4. Step 4: Simplify right side
    9,360.36x = 69,496,657.79
  5. Step 5: Solve for x
    x = 69,496,657.79/9,360.36
  6. Step 6: Final answer
    x = 7,424.57

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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.