Home / 5,211.07-7,816.62-1,315.47

Finding the Fourth Proportional to 5,211.07, 7,816.62 and 1,315.47

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Solution

The fourth proportional to 5,211.07, 7,816.62 and 1,315.47 is: 1,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.07 : 7,816.62 = 1,315.47 : x
  2. Step 2: Convert to fraction form
    5,211.07/7,816.62 = 1,315.47/x
  3. Step 3: Cross multiply
    5,211.07x = 7,816.62 × 1,315.47
  4. Step 4: Simplify right side
    5,211.07x = 10,282,563.36
  5. Step 5: Solve for x
    x = 10,282,563.36/5,211.07
  6. Step 6: Final answer
    x = 1,973.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.