Home / 7,485.40-11,228.14-1,938.35

Finding the Fourth Proportional to 7,485.40, 11,228.14 and 1,938.35

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Solution

The fourth proportional to 7,485.40, 11,228.14 and 1,938.35 is: 2,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.40 : 11,228.14 = 1,938.35 : x
  2. Step 2: Convert to fraction form
    7,485.40/11,228.14 = 1,938.35/x
  3. Step 3: Cross multiply
    7,485.40x = 11,228.14 × 1,938.35
  4. Step 4: Simplify right side
    7,485.40x = 21,764,084.76
  5. Step 5: Solve for x
    x = 21,764,084.76/7,485.40
  6. Step 6: Final answer
    x = 2,907.54

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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.