Home / 1,646.18-2,269.51-1,055.69

Finding the Fourth Proportional to 1,646.18, 2,269.51 and 1,055.69

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Solution

The fourth proportional to 1,646.18, 2,269.51 and 1,055.69 is: 1,455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.18 : 2,269.51 = 1,055.69 : x
  2. Step 2: Convert to fraction form
    1,646.18/2,269.51 = 1,055.69/x
  3. Step 3: Cross multiply
    1,646.18x = 2,269.51 × 1,055.69
  4. Step 4: Simplify right side
    1,646.18x = 2,395,893.73
  5. Step 5: Solve for x
    x = 2,395,893.73/1,646.18
  6. Step 6: Final answer
    x = 1,455.43

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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.