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Finding the Fourth Proportional to 8,970.06, 12,379.08 and 7,475.46

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Solution

The fourth proportional to 8,970.06, 12,379.08 and 7,475.46 is: 10,316.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.06 : 12,379.08 = 7,475.46 : x
  2. Step 2: Convert to fraction form
    8,970.06/12,379.08 = 7,475.46/x
  3. Step 3: Cross multiply
    8,970.06x = 12,379.08 × 7,475.46
  4. Step 4: Simplify right side
    8,970.06x = 92,539,317.38
  5. Step 5: Solve for x
    x = 92,539,317.38/8,970.06
  6. Step 6: Final answer
    x = 10,316.47

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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.