Home / 8,412.06-12,618.63-6,440.52

Finding the Fourth Proportional to 8,412.06, 12,618.63 and 6,440.52

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Solution

The fourth proportional to 8,412.06, 12,618.63 and 6,440.52 is: 9,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.06 : 12,618.63 = 6,440.52 : x
  2. Step 2: Convert to fraction form
    8,412.06/12,618.63 = 6,440.52/x
  3. Step 3: Cross multiply
    8,412.06x = 12,618.63 × 6,440.52
  4. Step 4: Simplify right side
    8,412.06x = 81,270,538.89
  5. Step 5: Solve for x
    x = 81,270,538.89/8,412.06
  6. Step 6: Final answer
    x = 9,661.19

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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.