Home / 9,871.01-13,621.77-5,394.80

Finding the Fourth Proportional to 9,871.01, 13,621.77 and 5,394.80

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Solution

The fourth proportional to 9,871.01, 13,621.77 and 5,394.80 is: 7,444.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.01 : 13,621.77 = 5,394.80 : x
  2. Step 2: Convert to fraction form
    9,871.01/13,621.77 = 5,394.80/x
  3. Step 3: Cross multiply
    9,871.01x = 13,621.77 × 5,394.80
  4. Step 4: Simplify right side
    9,871.01x = 73,486,656.69
  5. Step 5: Solve for x
    x = 73,486,656.69/9,871.01
  6. Step 6: Final answer
    x = 7,444.69

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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.