Home / 9,135.81-12,588.69-7,011.23

Finding the Fourth Proportional to 9,135.81, 12,588.69 and 7,011.23

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Solution

The fourth proportional to 9,135.81, 12,588.69 and 7,011.23 is: 9,661.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.81 : 12,588.69 = 7,011.23 : x
  2. Step 2: Convert to fraction form
    9,135.81/12,588.69 = 7,011.23/x
  3. Step 3: Cross multiply
    9,135.81x = 12,588.69 × 7,011.23
  4. Step 4: Simplify right side
    9,135.81x = 88,262,250.84
  5. Step 5: Solve for x
    x = 88,262,250.84/9,135.81
  6. Step 6: Final answer
    x = 9,661.13

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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.