Home / 5,385.15-7,431.08-3,148.34

Finding the Fourth Proportional to 5,385.15, 7,431.08 and 3,148.34

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Solution

The fourth proportional to 5,385.15, 7,431.08 and 3,148.34 is: 4,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.15 : 7,431.08 = 3,148.34 : x
  2. Step 2: Convert to fraction form
    5,385.15/7,431.08 = 3,148.34/x
  3. Step 3: Cross multiply
    5,385.15x = 7,431.08 × 3,148.34
  4. Step 4: Simplify right side
    5,385.15x = 23,395,513.51
  5. Step 5: Solve for x
    x = 23,395,513.51/5,385.15
  6. Step 6: Final answer
    x = 4,344.45

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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.