Home / 8,406.12-11,598.18-5,420.88

Finding the Fourth Proportional to 8,406.12, 11,598.18 and 5,420.88

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Solution

The fourth proportional to 8,406.12, 11,598.18 and 5,420.88 is: 7,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.12 : 11,598.18 = 5,420.88 : x
  2. Step 2: Convert to fraction form
    8,406.12/11,598.18 = 5,420.88/x
  3. Step 3: Cross multiply
    8,406.12x = 11,598.18 × 5,420.88
  4. Step 4: Simplify right side
    8,406.12x = 62,872,342.00
  5. Step 5: Solve for x
    x = 62,872,342.00/8,406.12
  6. Step 6: Final answer
    x = 7,479.35

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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.