Home / 1,721.05-2,374.83-964.87

Finding the Fourth Proportional to 1,721.05, 2,374.83 and 964.87

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Solution

The fourth proportional to 1,721.05, 2,374.83 and 964.87 is: 1,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.05 : 2,374.83 = 964.87 : x
  2. Step 2: Convert to fraction form
    1,721.05/2,374.83 = 964.87/x
  3. Step 3: Cross multiply
    1,721.05x = 2,374.83 × 964.87
  4. Step 4: Simplify right side
    1,721.05x = 2,291,396.29
  5. Step 5: Solve for x
    x = 2,291,396.29/1,721.05
  6. Step 6: Final answer
    x = 1,331.40

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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.