Home / 8,421.95-11,622.38-4,645.26

Finding the Fourth Proportional to 8,421.95, 11,622.38 and 4,645.26

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Solution

The fourth proportional to 8,421.95, 11,622.38 and 4,645.26 is: 6,410.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.95 : 11,622.38 = 4,645.26 : x
  2. Step 2: Convert to fraction form
    8,421.95/11,622.38 = 4,645.26/x
  3. Step 3: Cross multiply
    8,421.95x = 11,622.38 × 4,645.26
  4. Step 4: Simplify right side
    8,421.95x = 53,988,953.69
  5. Step 5: Solve for x
    x = 53,988,953.69/8,421.95
  6. Step 6: Final answer
    x = 6,410.51

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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.