Home / 9,980.48-13,775.04-5,790.08

Finding the Fourth Proportional to 9,980.48, 13,775.04 and 5,790.08

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Solution

The fourth proportional to 9,980.48, 13,775.04 and 5,790.08 is: 7,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.48 : 13,775.04 = 5,790.08 : x
  2. Step 2: Convert to fraction form
    9,980.48/13,775.04 = 5,790.08/x
  3. Step 3: Cross multiply
    9,980.48x = 13,775.04 × 5,790.08
  4. Step 4: Simplify right side
    9,980.48x = 79,758,583.60
  5. Step 5: Solve for x
    x = 79,758,583.60/9,980.48
  6. Step 6: Final answer
    x = 7,991.46

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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.