Home / 7,570.40-11,355.60-2,638.40

Finding the Fourth Proportional to 7,570.40, 11,355.60 and 2,638.40

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Solution

The fourth proportional to 7,570.40, 11,355.60 and 2,638.40 is: 3,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,570.40 : 11,355.60 = 2,638.40 : x
  2. Step 2: Convert to fraction form
    7,570.40/11,355.60 = 2,638.40/x
  3. Step 3: Cross multiply
    7,570.40x = 11,355.60 × 2,638.40
  4. Step 4: Simplify right side
    7,570.40x = 29,960,615.04
  5. Step 5: Solve for x
    x = 29,960,615.04/7,570.40
  6. Step 6: Final answer
    x = 3,957.60

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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.