Home / 9,051.79-12,480.60-7,790.68

Finding the Fourth Proportional to 9,051.79, 12,480.60 and 7,790.68

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Solution

The fourth proportional to 9,051.79, 12,480.60 and 7,790.68 is: 10,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,051.79 : 12,480.60 = 7,790.68 : x
  2. Step 2: Convert to fraction form
    9,051.79/12,480.60 = 7,790.68/x
  3. Step 3: Cross multiply
    9,051.79x = 12,480.60 × 7,790.68
  4. Step 4: Simplify right side
    9,051.79x = 97,232,360.81
  5. Step 5: Solve for x
    x = 97,232,360.81/9,051.79
  6. Step 6: Final answer
    x = 10,741.78

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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.