Home / 9,420.07-12,998.37-5,642.35

Finding the Fourth Proportional to 9,420.07, 12,998.37 and 5,642.35

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Solution

The fourth proportional to 9,420.07, 12,998.37 and 5,642.35 is: 7,785.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.07 : 12,998.37 = 5,642.35 : x
  2. Step 2: Convert to fraction form
    9,420.07/12,998.37 = 5,642.35/x
  3. Step 3: Cross multiply
    9,420.07x = 12,998.37 × 5,642.35
  4. Step 4: Simplify right side
    9,420.07x = 73,341,352.97
  5. Step 5: Solve for x
    x = 73,341,352.97/9,420.07
  6. Step 6: Final answer
    x = 7,785.65

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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.