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Finding the Fourth Proportional to 2,698.47, 3,726.14 and 1,817.19

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Solution

The fourth proportional to 2,698.47, 3,726.14 and 1,817.19 is: 2,509.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,698.47 : 3,726.14 = 1,817.19 : x
  2. Step 2: Convert to fraction form
    2,698.47/3,726.14 = 1,817.19/x
  3. Step 3: Cross multiply
    2,698.47x = 3,726.14 × 1,817.19
  4. Step 4: Simplify right side
    2,698.47x = 6,771,095.26
  5. Step 5: Solve for x
    x = 6,771,095.26/2,698.47
  6. Step 6: Final answer
    x = 2,509.23

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Half scale
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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.