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Finding the Fourth Proportional to 4,990.65, 7,486.80 and 1,703.40

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Solution

The fourth proportional to 4,990.65, 7,486.80 and 1,703.40 is: 2,555.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.65 : 7,486.80 = 1,703.40 : x
  2. Step 2: Convert to fraction form
    4,990.65/7,486.80 = 1,703.40/x
  3. Step 3: Cross multiply
    4,990.65x = 7,486.80 × 1,703.40
  4. Step 4: Simplify right side
    4,990.65x = 12,753,015.12
  5. Step 5: Solve for x
    x = 12,753,015.12/4,990.65
  6. Step 6: Final answer
    x = 2,555.38

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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.