Home / 7,421.36-11,133.04-2,740.80

Finding the Fourth Proportional to 7,421.36, 11,133.04 and 2,740.80

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Solution

The fourth proportional to 7,421.36, 11,133.04 and 2,740.80 is: 4,111.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.36 : 11,133.04 = 2,740.80 : x
  2. Step 2: Convert to fraction form
    7,421.36/11,133.04 = 2,740.80/x
  3. Step 3: Cross multiply
    7,421.36x = 11,133.04 × 2,740.80
  4. Step 4: Simplify right side
    7,421.36x = 30,513,436.03
  5. Step 5: Solve for x
    x = 30,513,436.03/7,421.36
  6. Step 6: Final answer
    x = 4,111.57

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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.