Home / 7,345.80-10,136.93-3,988.55

Finding the Fourth Proportional to 7,345.80, 10,136.93 and 3,988.55

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Solution

The fourth proportional to 7,345.80, 10,136.93 and 3,988.55 is: 5,504.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.80 : 10,136.93 = 3,988.55 : x
  2. Step 2: Convert to fraction form
    7,345.80/10,136.93 = 3,988.55/x
  3. Step 3: Cross multiply
    7,345.80x = 10,136.93 × 3,988.55
  4. Step 4: Simplify right side
    7,345.80x = 40,431,581.52
  5. Step 5: Solve for x
    x = 40,431,581.52/7,345.80
  6. Step 6: Final answer
    x = 5,504.04

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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.