Home / 1,712.07-2,570.31-890.91

Finding the Fourth Proportional to 1,712.07, 2,570.31 and 890.91

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Solution

The fourth proportional to 1,712.07, 2,570.31 and 890.91 is: 1,337.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.07 : 2,570.31 = 890.91 : x
  2. Step 2: Convert to fraction form
    1,712.07/2,570.31 = 890.91/x
  3. Step 3: Cross multiply
    1,712.07x = 2,570.31 × 890.91
  4. Step 4: Simplify right side
    1,712.07x = 2,289,914.88
  5. Step 5: Solve for x
    x = 2,289,914.88/1,712.07
  6. Step 6: Final answer
    x = 1,337.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.