Home / 1,890.60-2,611.52-1,576.89

Finding the Fourth Proportional to 1,890.60, 2,611.52 and 1,576.89

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Solution

The fourth proportional to 1,890.60, 2,611.52 and 1,576.89 is: 2,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.60 : 2,611.52 = 1,576.89 : x
  2. Step 2: Convert to fraction form
    1,890.60/2,611.52 = 1,576.89/x
  3. Step 3: Cross multiply
    1,890.60x = 2,611.52 × 1,576.89
  4. Step 4: Simplify right side
    1,890.60x = 4,118,079.77
  5. Step 5: Solve for x
    x = 4,118,079.77/1,890.60
  6. Step 6: Final answer
    x = 2,178.19

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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.