Home / 3,117.84-4,678.28-1,270.23

Finding the Fourth Proportional to 3,117.84, 4,678.28 and 1,270.23

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Solution

The fourth proportional to 3,117.84, 4,678.28 and 1,270.23 is: 1,905.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.84 : 4,678.28 = 1,270.23 : x
  2. Step 2: Convert to fraction form
    3,117.84/4,678.28 = 1,270.23/x
  3. Step 3: Cross multiply
    3,117.84x = 4,678.28 × 1,270.23
  4. Step 4: Simplify right side
    3,117.84x = 5,942,485.25
  5. Step 5: Solve for x
    x = 5,942,485.25/3,117.84
  6. Step 6: Final answer
    x = 1,905.96

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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.