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Finding the Fourth Proportional to 9,779.94, 13,494.87 and 5,529.87

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Solution

The fourth proportional to 9,779.94, 13,494.87 and 5,529.87 is: 7,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.94 : 13,494.87 = 5,529.87 : x
  2. Step 2: Convert to fraction form
    9,779.94/13,494.87 = 5,529.87/x
  3. Step 3: Cross multiply
    9,779.94x = 13,494.87 × 5,529.87
  4. Step 4: Simplify right side
    9,779.94x = 74,624,876.77
  5. Step 5: Solve for x
    x = 74,624,876.77/9,779.94
  6. Step 6: Final answer
    x = 7,630.40

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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.