Home / 7,328.17-10,112.87-3,971

Finding the Fourth Proportional to 7,328.17, 10,112.87 and 3,971

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Solution

The fourth proportional to 7,328.17, 10,112.87 and 3,971 is: 5,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.17 : 10,112.87 = 3,971 : x
  2. Step 2: Convert to fraction form
    7,328.17/10,112.87 = 3,971/x
  3. Step 3: Cross multiply
    7,328.17x = 10,112.87 × 3,971
  4. Step 4: Simplify right side
    7,328.17x = 40,158,206.77
  5. Step 5: Solve for x
    x = 40,158,206.77/7,328.17
  6. Step 6: Final answer
    x = 5,479.98

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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.