Home / 1,670.19-2,506.80-890.85

Finding the Fourth Proportional to 1,670.19, 2,506.80 and 890.85

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Solution

The fourth proportional to 1,670.19, 2,506.80 and 890.85 is: 1,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.19 : 2,506.80 = 890.85 : x
  2. Step 2: Convert to fraction form
    1,670.19/2,506.80 = 890.85/x
  3. Step 3: Cross multiply
    1,670.19x = 2,506.80 × 890.85
  4. Step 4: Simplify right side
    1,670.19x = 2,233,182.78
  5. Step 5: Solve for x
    x = 2,233,182.78/1,670.19
  6. Step 6: Final answer
    x = 1,337.08

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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.