Home / 7,518.35-10,368.46-6,455.78

Finding the Fourth Proportional to 7,518.35, 10,368.46 and 6,455.78

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Solution

The fourth proportional to 7,518.35, 10,368.46 and 6,455.78 is: 8,903.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.35 : 10,368.46 = 6,455.78 : x
  2. Step 2: Convert to fraction form
    7,518.35/10,368.46 = 6,455.78/x
  3. Step 3: Cross multiply
    7,518.35x = 10,368.46 × 6,455.78
  4. Step 4: Simplify right side
    7,518.35x = 66,936,496.70
  5. Step 5: Solve for x
    x = 66,936,496.70/7,518.35
  6. Step 6: Final answer
    x = 8,903.08

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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.