Home / 8,915.40-13,373.10-3,720.06

Finding the Fourth Proportional to 8,915.40, 13,373.10 and 3,720.06

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Solution

The fourth proportional to 8,915.40, 13,373.10 and 3,720.06 is: 5,580.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.40 : 13,373.10 = 3,720.06 : x
  2. Step 2: Convert to fraction form
    8,915.40/13,373.10 = 3,720.06/x
  3. Step 3: Cross multiply
    8,915.40x = 13,373.10 × 3,720.06
  4. Step 4: Simplify right side
    8,915.40x = 49,748,734.39
  5. Step 5: Solve for x
    x = 49,748,734.39/8,915.40
  6. Step 6: Final answer
    x = 5,580.09

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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.