Home / 7,345.68-10,136.84-3,988.34

Finding the Fourth Proportional to 7,345.68, 10,136.84 and 3,988.34

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Solution

The fourth proportional to 7,345.68, 10,136.84 and 3,988.34 is: 5,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.68 : 10,136.84 = 3,988.34 : x
  2. Step 2: Convert to fraction form
    7,345.68/10,136.84 = 3,988.34/x
  3. Step 3: Cross multiply
    7,345.68x = 10,136.84 × 3,988.34
  4. Step 4: Simplify right side
    7,345.68x = 40,429,164.45
  5. Step 5: Solve for x
    x = 40,429,164.45/7,345.68
  6. Step 6: Final answer
    x = 5,503.80

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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.