Home / 7,039.71-9,715.90-4,206.18

Finding the Fourth Proportional to 7,039.71, 9,715.90 and 4,206.18

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Solution

The fourth proportional to 7,039.71, 9,715.90 and 4,206.18 is: 5,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.71 : 9,715.90 = 4,206.18 : x
  2. Step 2: Convert to fraction form
    7,039.71/9,715.90 = 4,206.18/x
  3. Step 3: Cross multiply
    7,039.71x = 9,715.90 × 4,206.18
  4. Step 4: Simplify right side
    7,039.71x = 40,866,803.42
  5. Step 5: Solve for x
    x = 40,866,803.42/7,039.71
  6. Step 6: Final answer
    x = 5,805.18

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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.