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Finding the Fourth Proportional to 6,891.49, 9,509.88 and 4,237.93

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Solution

The fourth proportional to 6,891.49, 9,509.88 and 4,237.93 is: 5,848.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.49 : 9,509.88 = 4,237.93 : x
  2. Step 2: Convert to fraction form
    6,891.49/9,509.88 = 4,237.93/x
  3. Step 3: Cross multiply
    6,891.49x = 9,509.88 × 4,237.93
  4. Step 4: Simplify right side
    6,891.49x = 40,302,205.75
  5. Step 5: Solve for x
    x = 40,302,205.75/6,891.49
  6. Step 6: Final answer
    x = 5,848.11

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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.