Home / 1,487.05-2,052.18-890.17

Finding the Fourth Proportional to 1,487.05, 2,052.18 and 890.17

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Solution

The fourth proportional to 1,487.05, 2,052.18 and 890.17 is: 1,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.05 : 2,052.18 = 890.17 : x
  2. Step 2: Convert to fraction form
    1,487.05/2,052.18 = 890.17/x
  3. Step 3: Cross multiply
    1,487.05x = 2,052.18 × 890.17
  4. Step 4: Simplify right side
    1,487.05x = 1,826,783.94
  5. Step 5: Solve for x
    x = 1,826,783.94/1,487.05
  6. Step 6: Final answer
    x = 1,228.46

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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.