Home / 7,088.80-9,776.64-4,431.36

Finding the Fourth Proportional to 7,088.80, 9,776.64 and 4,431.36

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Solution

The fourth proportional to 7,088.80, 9,776.64 and 4,431.36 is: 6,111.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088.80 : 9,776.64 = 4,431.36 : x
  2. Step 2: Convert to fraction form
    7,088.80/9,776.64 = 4,431.36/x
  3. Step 3: Cross multiply
    7,088.80x = 9,776.64 × 4,431.36
  4. Step 4: Simplify right side
    7,088.80x = 43,323,811.43
  5. Step 5: Solve for x
    x = 43,323,811.43/7,088.80
  6. Step 6: Final answer
    x = 6,111.59

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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.