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Finding the Fourth Proportional to 8,359.58, 12,515.06 and 6,505.07

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Solution

The fourth proportional to 8,359.58, 12,515.06 and 6,505.07 is: 9,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.58 : 12,515.06 = 6,505.07 : x
  2. Step 2: Convert to fraction form
    8,359.58/12,515.06 = 6,505.07/x
  3. Step 3: Cross multiply
    8,359.58x = 12,515.06 × 6,505.07
  4. Step 4: Simplify right side
    8,359.58x = 81,411,364.51
  5. Step 5: Solve for x
    x = 81,411,364.51/8,359.58
  6. Step 6: Final answer
    x = 9,738.69

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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.