Home / 5,316.40-7,335.36-3,078.22

Finding the Fourth Proportional to 5,316.40, 7,335.36 and 3,078.22

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Solution

The fourth proportional to 5,316.40, 7,335.36 and 3,078.22 is: 4,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.40 : 7,335.36 = 3,078.22 : x
  2. Step 2: Convert to fraction form
    5,316.40/7,335.36 = 3,078.22/x
  3. Step 3: Cross multiply
    5,316.40x = 7,335.36 × 3,078.22
  4. Step 4: Simplify right side
    5,316.40x = 22,579,851.86
  5. Step 5: Solve for x
    x = 22,579,851.86/5,316.40
  6. Step 6: Final answer
    x = 4,247.21

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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.