Home / 8,910.32-13,386.26-5,215.16

Finding the Fourth Proportional to 8,910.32, 13,386.26 and 5,215.16

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Solution

The fourth proportional to 8,910.32, 13,386.26 and 5,215.16 is: 7,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.32 : 13,386.26 = 5,215.16 : x
  2. Step 2: Convert to fraction form
    8,910.32/13,386.26 = 5,215.16/x
  3. Step 3: Cross multiply
    8,910.32x = 13,386.26 × 5,215.16
  4. Step 4: Simplify right side
    8,910.32x = 69,811,534.21
  5. Step 5: Solve for x
    x = 69,811,534.21/8,910.32
  6. Step 6: Final answer
    x = 7,834.91

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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.