Home / 2,115.10-2,918.74-1,170.93

Finding the Fourth Proportional to 2,115.10, 2,918.74 and 1,170.93

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Solution

The fourth proportional to 2,115.10, 2,918.74 and 1,170.93 is: 1,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.10 : 2,918.74 = 1,170.93 : x
  2. Step 2: Convert to fraction form
    2,115.10/2,918.74 = 1,170.93/x
  3. Step 3: Cross multiply
    2,115.10x = 2,918.74 × 1,170.93
  4. Step 4: Simplify right side
    2,115.10x = 3,417,640.23
  5. Step 5: Solve for x
    x = 3,417,640.23/2,115.10
  6. Step 6: Final answer
    x = 1,615.83

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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.