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Finding the Fourth Proportional to 8,355, 12,530.97 and 3,089.19

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Solution

The fourth proportional to 8,355, 12,530.97 and 3,089.19 is: 4,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355 : 12,530.97 = 3,089.19 : x
  2. Step 2: Convert to fraction form
    8,355/12,530.97 = 3,089.19/x
  3. Step 3: Cross multiply
    8,355x = 12,530.97 × 3,089.19
  4. Step 4: Simplify right side
    8,355x = 38,710,547.21
  5. Step 5: Solve for x
    x = 38,710,547.21/8,355
  6. Step 6: Final answer
    x = 4,633.22

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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.