Home / 1,529.08-2,109.34-899.30

Finding the Fourth Proportional to 1,529.08, 2,109.34 and 899.30

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Solution

The fourth proportional to 1,529.08, 2,109.34 and 899.30 is: 1,240.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.08 : 2,109.34 = 899.30 : x
  2. Step 2: Convert to fraction form
    1,529.08/2,109.34 = 899.30/x
  3. Step 3: Cross multiply
    1,529.08x = 2,109.34 × 899.30
  4. Step 4: Simplify right side
    1,529.08x = 1,896,935.86
  5. Step 5: Solve for x
    x = 1,896,935.86/1,529.08
  6. Step 6: Final answer
    x = 1,240.58

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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.