Home / 5,421.45-7,485.08-4,429.11

Finding the Fourth Proportional to 5,421.45, 7,485.08 and 4,429.11

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Solution

The fourth proportional to 5,421.45, 7,485.08 and 4,429.11 is: 6,115.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.45 : 7,485.08 = 4,429.11 : x
  2. Step 2: Convert to fraction form
    5,421.45/7,485.08 = 4,429.11/x
  3. Step 3: Cross multiply
    5,421.45x = 7,485.08 × 4,429.11
  4. Step 4: Simplify right side
    5,421.45x = 33,152,220.53
  5. Step 5: Solve for x
    x = 33,152,220.53/5,421.45
  6. Step 6: Final answer
    x = 6,115.01

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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.