Home / 7,019.80-9,689.28-4,036.60

Finding the Fourth Proportional to 7,019.80, 9,689.28 and 4,036.60

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Solution

The fourth proportional to 7,019.80, 9,689.28 and 4,036.60 is: 5,571.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.80 : 9,689.28 = 4,036.60 : x
  2. Step 2: Convert to fraction form
    7,019.80/9,689.28 = 4,036.60/x
  3. Step 3: Cross multiply
    7,019.80x = 9,689.28 × 4,036.60
  4. Step 4: Simplify right side
    7,019.80x = 39,111,744.62
  5. Step 5: Solve for x
    x = 39,111,744.62/7,019.80
  6. Step 6: Final answer
    x = 5,571.63

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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.