Home / 1,721.08-2,579.28-897.67

Finding the Fourth Proportional to 1,721.08, 2,579.28 and 897.67

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Solution

The fourth proportional to 1,721.08, 2,579.28 and 897.67 is: 1,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.08 : 2,579.28 = 897.67 : x
  2. Step 2: Convert to fraction form
    1,721.08/2,579.28 = 897.67/x
  3. Step 3: Cross multiply
    1,721.08x = 2,579.28 × 897.67
  4. Step 4: Simplify right side
    1,721.08x = 2,315,342.28
  5. Step 5: Solve for x
    x = 2,315,342.28/1,721.08
  6. Step 6: Final answer
    x = 1,345.28

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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.