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Finding the Fourth Proportional to 9,782.50, 13,499.87 and 5,590.74

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Solution

The fourth proportional to 9,782.50, 13,499.87 and 5,590.74 is: 7,715.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,782.50 : 13,499.87 = 5,590.74 : x
  2. Step 2: Convert to fraction form
    9,782.50/13,499.87 = 5,590.74/x
  3. Step 3: Cross multiply
    9,782.50x = 13,499.87 × 5,590.74
  4. Step 4: Simplify right side
    9,782.50x = 75,474,263.20
  5. Step 5: Solve for x
    x = 75,474,263.20/9,782.50
  6. Step 6: Final answer
    x = 7,715.23

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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.