Home / 8,915.36-13,368.54-5,218.82

Finding the Fourth Proportional to 8,915.36, 13,368.54 and 5,218.82

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Solution

The fourth proportional to 8,915.36, 13,368.54 and 5,218.82 is: 7,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.36 : 13,368.54 = 5,218.82 : x
  2. Step 2: Convert to fraction form
    8,915.36/13,368.54 = 5,218.82/x
  3. Step 3: Cross multiply
    8,915.36x = 13,368.54 × 5,218.82
  4. Step 4: Simplify right side
    8,915.36x = 69,768,003.92
  5. Step 5: Solve for x
    x = 69,768,003.92/8,915.36
  6. Step 6: Final answer
    x = 7,825.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.