Home / 1,205.10-1,798.77-1,117.17

Finding the Fourth Proportional to 1,205.10, 1,798.77 and 1,117.17

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Solution

The fourth proportional to 1,205.10, 1,798.77 and 1,117.17 is: 1,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.10 : 1,798.77 = 1,117.17 : x
  2. Step 2: Convert to fraction form
    1,205.10/1,798.77 = 1,117.17/x
  3. Step 3: Cross multiply
    1,205.10x = 1,798.77 × 1,117.17
  4. Step 4: Simplify right side
    1,205.10x = 2,009,531.88
  5. Step 5: Solve for x
    x = 2,009,531.88/1,205.10
  6. Step 6: Final answer
    x = 1,667.52

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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.