Home / 9,001.81-12,420.51-5,222.79

Finding the Fourth Proportional to 9,001.81, 12,420.51 and 5,222.79

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Solution

The fourth proportional to 9,001.81, 12,420.51 and 5,222.79 is: 7,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.81 : 12,420.51 = 5,222.79 : x
  2. Step 2: Convert to fraction form
    9,001.81/12,420.51 = 5,222.79/x
  3. Step 3: Cross multiply
    9,001.81x = 12,420.51 × 5,222.79
  4. Step 4: Simplify right side
    9,001.81x = 64,869,627.21
  5. Step 5: Solve for x
    x = 64,869,627.21/9,001.81
  6. Step 6: Final answer
    x = 7,206.29

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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.