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Finding the Fourth Proportional to 8,953.69, 13,430.55 and 3,106.19

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Solution

The fourth proportional to 8,953.69, 13,430.55 and 3,106.19 is: 4,659.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.69 : 13,430.55 = 3,106.19 : x
  2. Step 2: Convert to fraction form
    8,953.69/13,430.55 = 3,106.19/x
  3. Step 3: Cross multiply
    8,953.69x = 13,430.55 × 3,106.19
  4. Step 4: Simplify right side
    8,953.69x = 41,717,840.10
  5. Step 5: Solve for x
    x = 41,717,840.10/8,953.69
  6. Step 6: Final answer
    x = 4,659.29

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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.