Home / 2,690.62-3,712.39-1,570.91

Finding the Fourth Proportional to 2,690.62, 3,712.39 and 1,570.91

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Solution

The fourth proportional to 2,690.62, 3,712.39 and 1,570.91 is: 2,167.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.62 : 3,712.39 = 1,570.91 : x
  2. Step 2: Convert to fraction form
    2,690.62/3,712.39 = 1,570.91/x
  3. Step 3: Cross multiply
    2,690.62x = 3,712.39 × 1,570.91
  4. Step 4: Simplify right side
    2,690.62x = 5,831,808.09
  5. Step 5: Solve for x
    x = 5,831,808.09/2,690.62
  6. Step 6: Final answer
    x = 2,167.46

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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.