Home / 7,039.95-9,715.19-3,896.13

Finding the Fourth Proportional to 7,039.95, 9,715.19 and 3,896.13

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Solution

The fourth proportional to 7,039.95, 9,715.19 and 3,896.13 is: 5,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.95 : 9,715.19 = 3,896.13 : x
  2. Step 2: Convert to fraction form
    7,039.95/9,715.19 = 3,896.13/x
  3. Step 3: Cross multiply
    7,039.95x = 9,715.19 × 3,896.13
  4. Step 4: Simplify right side
    7,039.95x = 37,851,643.21
  5. Step 5: Solve for x
    x = 37,851,643.21/7,039.95
  6. Step 6: Final answer
    x = 5,376.69

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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.