Home / 6,429.24-8,859.51-5,421.02

Finding the Fourth Proportional to 6,429.24, 8,859.51 and 5,421.02

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Solution

The fourth proportional to 6,429.24, 8,859.51 and 5,421.02 is: 7,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.24 : 8,859.51 = 5,421.02 : x
  2. Step 2: Convert to fraction form
    6,429.24/8,859.51 = 5,421.02/x
  3. Step 3: Cross multiply
    6,429.24x = 8,859.51 × 5,421.02
  4. Step 4: Simplify right side
    6,429.24x = 48,027,536.60
  5. Step 5: Solve for x
    x = 48,027,536.60/6,429.24
  6. Step 6: Final answer
    x = 7,470.17

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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.