Home / 7,528.90-11,297.40-6,438.25

Finding the Fourth Proportional to 7,528.90, 11,297.40 and 6,438.25

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Solution

The fourth proportional to 7,528.90, 11,297.40 and 6,438.25 is: 9,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,528.90 : 11,297.40 = 6,438.25 : x
  2. Step 2: Convert to fraction form
    7,528.90/11,297.40 = 6,438.25/x
  3. Step 3: Cross multiply
    7,528.90x = 11,297.40 × 6,438.25
  4. Step 4: Simplify right side
    7,528.90x = 72,735,485.55
  5. Step 5: Solve for x
    x = 72,735,485.55/7,528.90
  6. Step 6: Final answer
    x = 9,660.84

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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.