Home / 1,589.15-2,193.08-890.51

Finding the Fourth Proportional to 1,589.15, 2,193.08 and 890.51

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Solution

The fourth proportional to 1,589.15, 2,193.08 and 890.51 is: 1,228.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.15 : 2,193.08 = 890.51 : x
  2. Step 2: Convert to fraction form
    1,589.15/2,193.08 = 890.51/x
  3. Step 3: Cross multiply
    1,589.15x = 2,193.08 × 890.51
  4. Step 4: Simplify right side
    1,589.15x = 1,952,955.22
  5. Step 5: Solve for x
    x = 1,952,955.22/1,589.15
  6. Step 6: Final answer
    x = 1,228.93

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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.