Home / 7,970.78-10,999.50-4,433.76

Finding the Fourth Proportional to 7,970.78, 10,999.50 and 4,433.76

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Solution

The fourth proportional to 7,970.78, 10,999.50 and 4,433.76 is: 6,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,970.78 : 10,999.50 = 4,433.76 : x
  2. Step 2: Convert to fraction form
    7,970.78/10,999.50 = 4,433.76/x
  3. Step 3: Cross multiply
    7,970.78x = 10,999.50 × 4,433.76
  4. Step 4: Simplify right side
    7,970.78x = 48,769,143.12
  5. Step 5: Solve for x
    x = 48,769,143.12/7,970.78
  6. Step 6: Final answer
    x = 6,118.49

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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.