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Finding the Fourth Proportional to 8,334.72, 11,498.40 and 7,070.40

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Solution

The fourth proportional to 8,334.72, 11,498.40 and 7,070.40 is: 9,754.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,334.72 : 11,498.40 = 7,070.40 : x
  2. Step 2: Convert to fraction form
    8,334.72/11,498.40 = 7,070.40/x
  3. Step 3: Cross multiply
    8,334.72x = 11,498.40 × 7,070.40
  4. Step 4: Simplify right side
    8,334.72x = 81,298,287.36
  5. Step 5: Solve for x
    x = 81,298,287.36/8,334.72
  6. Step 6: Final answer
    x = 9,754.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.