Home / 8,405.87-11,597.66-5,423.45

Finding the Fourth Proportional to 8,405.87, 11,597.66 and 5,423.45

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Solution

The fourth proportional to 8,405.87, 11,597.66 and 5,423.45 is: 7,482.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.87 : 11,597.66 = 5,423.45 : x
  2. Step 2: Convert to fraction form
    8,405.87/11,597.66 = 5,423.45/x
  3. Step 3: Cross multiply
    8,405.87x = 11,597.66 × 5,423.45
  4. Step 4: Simplify right side
    8,405.87x = 62,899,329.13
  5. Step 5: Solve for x
    x = 62,899,329.13/8,405.87
  6. Step 6: Final answer
    x = 7,482.79

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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.