Home / 9,102.94-12,561.75-5,123.81

Finding the Fourth Proportional to 9,102.94, 12,561.75 and 5,123.81

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Solution

The fourth proportional to 9,102.94, 12,561.75 and 5,123.81 is: 7,070.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,102.94 : 12,561.75 = 5,123.81 : x
  2. Step 2: Convert to fraction form
    9,102.94/12,561.75 = 5,123.81/x
  3. Step 3: Cross multiply
    9,102.94x = 12,561.75 × 5,123.81
  4. Step 4: Simplify right side
    9,102.94x = 64,364,051.67
  5. Step 5: Solve for x
    x = 64,364,051.67/9,102.94
  6. Step 6: Final answer
    x = 7,070.69

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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.