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Finding the Fourth Proportional to 8,984.93, 13,410.87 and 8,430.89

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Solution

The fourth proportional to 8,984.93, 13,410.87 and 8,430.89 is: 12,583.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.93 : 13,410.87 = 8,430.89 : x
  2. Step 2: Convert to fraction form
    8,984.93/13,410.87 = 8,430.89/x
  3. Step 3: Cross multiply
    8,984.93x = 13,410.87 × 8,430.89
  4. Step 4: Simplify right side
    8,984.93x = 113,065,471.10
  5. Step 5: Solve for x
    x = 113,065,471.10/8,984.93
  6. Step 6: Final answer
    x = 12,583.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.