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Finding the Fourth Proportional to 6,485.32, 9,712.86 and 6,436.72

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Solution

The fourth proportional to 6,485.32, 9,712.86 and 6,436.72 is: 9,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.32 : 9,712.86 = 6,436.72 : x
  2. Step 2: Convert to fraction form
    6,485.32/9,712.86 = 6,436.72/x
  3. Step 3: Cross multiply
    6,485.32x = 9,712.86 × 6,436.72
  4. Step 4: Simplify right side
    6,485.32x = 62,518,960.22
  5. Step 5: Solve for x
    x = 62,518,960.22/6,485.32
  6. Step 6: Final answer
    x = 9,640.07

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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.