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Finding the Fourth Proportional to 5,590, 7,710.99 and 3,490.48

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Solution

The fourth proportional to 5,590, 7,710.99 and 3,490.48 is: 4,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590 : 7,710.99 = 3,490.48 : x
  2. Step 2: Convert to fraction form
    5,590/7,710.99 = 3,490.48/x
  3. Step 3: Cross multiply
    5,590x = 7,710.99 × 3,490.48
  4. Step 4: Simplify right side
    5,590x = 26,915,056.38
  5. Step 5: Solve for x
    x = 26,915,056.38/5,590
  6. Step 6: Final answer
    x = 4,814.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.