Home / 1,698.23-2,342.17-1,225.19

Finding the Fourth Proportional to 1,698.23, 2,342.17 and 1,225.19

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Solution

The fourth proportional to 1,698.23, 2,342.17 and 1,225.19 is: 1,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.23 : 2,342.17 = 1,225.19 : x
  2. Step 2: Convert to fraction form
    1,698.23/2,342.17 = 1,225.19/x
  3. Step 3: Cross multiply
    1,698.23x = 2,342.17 × 1,225.19
  4. Step 4: Simplify right side
    1,698.23x = 2,869,603.26
  5. Step 5: Solve for x
    x = 2,869,603.26/1,698.23
  6. Step 6: Final answer
    x = 1,689.76

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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.