Home / 1,386.01-2,087.22-1,205.58

Finding the Fourth Proportional to 1,386.01, 2,087.22 and 1,205.58

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Solution

The fourth proportional to 1,386.01, 2,087.22 and 1,205.58 is: 1,815.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.01 : 2,087.22 = 1,205.58 : x
  2. Step 2: Convert to fraction form
    1,386.01/2,087.22 = 1,205.58/x
  3. Step 3: Cross multiply
    1,386.01x = 2,087.22 × 1,205.58
  4. Step 4: Simplify right side
    1,386.01x = 2,516,316.25
  5. Step 5: Solve for x
    x = 2,516,316.25/1,386.01
  6. Step 6: Final answer
    x = 1,815.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.