Home / 5,421.64-8,119.18-4,478.82

Finding the Fourth Proportional to 5,421.64, 8,119.18 and 4,478.82

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Solution

The fourth proportional to 5,421.64, 8,119.18 and 4,478.82 is: 6,707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.64 : 8,119.18 = 4,478.82 : x
  2. Step 2: Convert to fraction form
    5,421.64/8,119.18 = 4,478.82/x
  3. Step 3: Cross multiply
    5,421.64x = 8,119.18 × 4,478.82
  4. Step 4: Simplify right side
    5,421.64x = 36,364,345.77
  5. Step 5: Solve for x
    x = 36,364,345.77/5,421.64
  6. Step 6: Final answer
    x = 6,707.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.