Home / 7,478.40-11,216.66-2,798.58

Finding the Fourth Proportional to 7,478.40, 11,216.66 and 2,798.58

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Solution

The fourth proportional to 7,478.40, 11,216.66 and 2,798.58 is: 4,197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.40 : 11,216.66 = 2,798.58 : x
  2. Step 2: Convert to fraction form
    7,478.40/11,216.66 = 2,798.58/x
  3. Step 3: Cross multiply
    7,478.40x = 11,216.66 × 2,798.58
  4. Step 4: Simplify right side
    7,478.40x = 31,390,720.34
  5. Step 5: Solve for x
    x = 31,390,720.34/7,478.40
  6. Step 6: Final answer
    x = 4,197.52

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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.