Home / 8,115.36-11,196-4,970.40

Finding the Fourth Proportional to 8,115.36, 11,196 and 4,970.40

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Solution

The fourth proportional to 8,115.36, 11,196 and 4,970.40 is: 6,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.36 : 11,196 = 4,970.40 : x
  2. Step 2: Convert to fraction form
    8,115.36/11,196 = 4,970.40/x
  3. Step 3: Cross multiply
    8,115.36x = 11,196 × 4,970.40
  4. Step 4: Simplify right side
    8,115.36x = 55,648,598.40
  5. Step 5: Solve for x
    x = 55,648,598.40/8,115.36
  6. Step 6: Final answer
    x = 6,857.19

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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.