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Finding the Fourth Proportional to 5,148.65, 7,656.74 and 4,984.62

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Solution

The fourth proportional to 5,148.65, 7,656.74 and 4,984.62 is: 7,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.65 : 7,656.74 = 4,984.62 : x
  2. Step 2: Convert to fraction form
    5,148.65/7,656.74 = 4,984.62/x
  3. Step 3: Cross multiply
    5,148.65x = 7,656.74 × 4,984.62
  4. Step 4: Simplify right side
    5,148.65x = 38,165,914.42
  5. Step 5: Solve for x
    x = 38,165,914.42/5,148.65
  6. Step 6: Final answer
    x = 7,412.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.