Home / 9,871.09-13,622.30-5,395.03

Finding the Fourth Proportional to 9,871.09, 13,622.30 and 5,395.03

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Solution

The fourth proportional to 9,871.09, 13,622.30 and 5,395.03 is: 7,445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.09 : 13,622.30 = 5,395.03 : x
  2. Step 2: Convert to fraction form
    9,871.09/13,622.30 = 5,395.03/x
  3. Step 3: Cross multiply
    9,871.09x = 13,622.30 × 5,395.03
  4. Step 4: Simplify right side
    9,871.09x = 73,492,717.17
  5. Step 5: Solve for x
    x = 73,492,717.17/9,871.09
  6. Step 6: Final answer
    x = 7,445.25

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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.