Home / 8,917.35-12,302.40-5,730.15

Finding the Fourth Proportional to 8,917.35, 12,302.40 and 5,730.15

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Solution

The fourth proportional to 8,917.35, 12,302.40 and 5,730.15 is: 7,905.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.35 : 12,302.40 = 5,730.15 : x
  2. Step 2: Convert to fraction form
    8,917.35/12,302.40 = 5,730.15/x
  3. Step 3: Cross multiply
    8,917.35x = 12,302.40 × 5,730.15
  4. Step 4: Simplify right side
    8,917.35x = 70,494,597.36
  5. Step 5: Solve for x
    x = 70,494,597.36/8,917.35
  6. Step 6: Final answer
    x = 7,905.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.