Home / 9,678.75-14,490.58-6,381.78

Finding the Fourth Proportional to 9,678.75, 14,490.58 and 6,381.78

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Solution

The fourth proportional to 9,678.75, 14,490.58 and 6,381.78 is: 9,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.75 : 14,490.58 = 6,381.78 : x
  2. Step 2: Convert to fraction form
    9,678.75/14,490.58 = 6,381.78/x
  3. Step 3: Cross multiply
    9,678.75x = 14,490.58 × 6,381.78
  4. Step 4: Simplify right side
    9,678.75x = 92,475,693.63
  5. Step 5: Solve for x
    x = 92,475,693.63/9,678.75
  6. Step 6: Final answer
    x = 9,554.51

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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.