Home / 7,240.16-9,989.88-5,563.40

Finding the Fourth Proportional to 7,240.16, 9,989.88 and 5,563.40

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Solution

The fourth proportional to 7,240.16, 9,989.88 and 5,563.40 is: 7,676.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.16 : 9,989.88 = 5,563.40 : x
  2. Step 2: Convert to fraction form
    7,240.16/9,989.88 = 5,563.40/x
  3. Step 3: Cross multiply
    7,240.16x = 9,989.88 × 5,563.40
  4. Step 4: Simplify right side
    7,240.16x = 55,577,698.39
  5. Step 5: Solve for x
    x = 55,577,698.39/7,240.16
  6. Step 6: Final answer
    x = 7,676.31

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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.