Home / 7,136.19-10,688.45-5,480.55

Finding the Fourth Proportional to 7,136.19, 10,688.45 and 5,480.55

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Solution

The fourth proportional to 7,136.19, 10,688.45 and 5,480.55 is: 8,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.19 : 10,688.45 = 5,480.55 : x
  2. Step 2: Convert to fraction form
    7,136.19/10,688.45 = 5,480.55/x
  3. Step 3: Cross multiply
    7,136.19x = 10,688.45 × 5,480.55
  4. Step 4: Simplify right side
    7,136.19x = 58,578,557.24
  5. Step 5: Solve for x
    x = 58,578,557.24/7,136.19
  6. Step 6: Final answer
    x = 8,208.66

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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.