Home / 2,215.48-3,323.54-847.80

Finding the Fourth Proportional to 2,215.48, 3,323.54 and 847.80

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Solution

The fourth proportional to 2,215.48, 3,323.54 and 847.80 is: 1,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.48 : 3,323.54 = 847.80 : x
  2. Step 2: Convert to fraction form
    2,215.48/3,323.54 = 847.80/x
  3. Step 3: Cross multiply
    2,215.48x = 3,323.54 × 847.80
  4. Step 4: Simplify right side
    2,215.48x = 2,817,697.21
  5. Step 5: Solve for x
    x = 2,817,697.21/2,215.48
  6. Step 6: Final answer
    x = 1,271.82

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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.