Home / 2,215.50-3,323.28-916.08

Finding the Fourth Proportional to 2,215.50, 3,323.28 and 916.08

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Solution

The fourth proportional to 2,215.50, 3,323.28 and 916.08 is: 1,374.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.50 : 3,323.28 = 916.08 : x
  2. Step 2: Convert to fraction form
    2,215.50/3,323.28 = 916.08/x
  3. Step 3: Cross multiply
    2,215.50x = 3,323.28 × 916.08
  4. Step 4: Simplify right side
    2,215.50x = 3,044,390.34
  5. Step 5: Solve for x
    x = 3,044,390.34/2,215.50
  6. Step 6: Final answer
    x = 1,374.13

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1.5x scale

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.