Home / 4,988.76-7,478.80-3,688.44

Finding the Fourth Proportional to 4,988.76, 7,478.80 and 3,688.44

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Solution

The fourth proportional to 4,988.76, 7,478.80 and 3,688.44 is: 5,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.76 : 7,478.80 = 3,688.44 : x
  2. Step 2: Convert to fraction form
    4,988.76/7,478.80 = 3,688.44/x
  3. Step 3: Cross multiply
    4,988.76x = 7,478.80 × 3,688.44
  4. Step 4: Simplify right side
    4,988.76x = 27,585,105.07
  5. Step 5: Solve for x
    x = 27,585,105.07/4,988.76
  6. Step 6: Final answer
    x = 5,529.45

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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.