Home / 8,302.40-12,417.60-7,431.20

Finding the Fourth Proportional to 8,302.40, 12,417.60 and 7,431.20

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Solution

The fourth proportional to 8,302.40, 12,417.60 and 7,431.20 is: 11,114.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,302.40 : 12,417.60 = 7,431.20 : x
  2. Step 2: Convert to fraction form
    8,302.40/12,417.60 = 7,431.20/x
  3. Step 3: Cross multiply
    8,302.40x = 12,417.60 × 7,431.20
  4. Step 4: Simplify right side
    8,302.40x = 92,277,669.12
  5. Step 5: Solve for x
    x = 92,277,669.12/8,302.40
  6. Step 6: Final answer
    x = 11,114.58

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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.