Home / 10,780.78-14,878.65-6,306.04

Finding the Fourth Proportional to 10,780.78, 14,878.65 and 6,306.04

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Solution

The fourth proportional to 10,780.78, 14,878.65 and 6,306.04 is: 8,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.78 : 14,878.65 = 6,306.04 : x
  2. Step 2: Convert to fraction form
    10,780.78/14,878.65 = 6,306.04/x
  3. Step 3: Cross multiply
    10,780.78x = 14,878.65 × 6,306.04
  4. Step 4: Simplify right side
    10,780.78x = 93,825,362.05
  5. Step 5: Solve for x
    x = 93,825,362.05/10,780.78
  6. Step 6: Final answer
    x = 8,703.02

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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.