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Finding the Fourth Proportional to 5,378.70, 8,051.85 and 4,730.70

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Solution

The fourth proportional to 5,378.70, 8,051.85 and 4,730.70 is: 7,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.70 : 8,051.85 = 4,730.70 : x
  2. Step 2: Convert to fraction form
    5,378.70/8,051.85 = 4,730.70/x
  3. Step 3: Cross multiply
    5,378.70x = 8,051.85 × 4,730.70
  4. Step 4: Simplify right side
    5,378.70x = 38,090,886.80
  5. Step 5: Solve for x
    x = 38,090,886.80/5,378.70
  6. Step 6: Final answer
    x = 7,081.80

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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.