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Finding the Fourth Proportional to 4,047.70, 5,678.30 and 4,047.70

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Solution

The fourth proportional to 4,047.70, 5,678.30 and 4,047.70 is: 5,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047.70 : 5,678.30 = 4,047.70 : x
  2. Step 2: Convert to fraction form
    4,047.70/5,678.30 = 4,047.70/x
  3. Step 3: Cross multiply
    4,047.70x = 5,678.30 × 4,047.70
  4. Step 4: Simplify right side
    4,047.70x = 22,984,054.91
  5. Step 5: Solve for x
    x = 22,984,054.91/4,047.70
  6. Step 6: Final answer
    x = 5,678.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.