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Finding the Fourth Proportional to 8,670.79, 13,009.80 and 5,554.30

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Solution

The fourth proportional to 8,670.79, 13,009.80 and 5,554.30 is: 8,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.79 : 13,009.80 = 5,554.30 : x
  2. Step 2: Convert to fraction form
    8,670.79/13,009.80 = 5,554.30/x
  3. Step 3: Cross multiply
    8,670.79x = 13,009.80 × 5,554.30
  4. Step 4: Simplify right side
    8,670.79x = 72,260,332.14
  5. Step 5: Solve for x
    x = 72,260,332.14/8,670.79
  6. Step 6: Final answer
    x = 8,333.77

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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.