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Finding the Fourth Proportional to 9,030.99, 12,435.08 and 7,905.63

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Solution

The fourth proportional to 9,030.99, 12,435.08 and 7,905.63 is: 10,885.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,030.99 : 12,435.08 = 7,905.63 : x
  2. Step 2: Convert to fraction form
    9,030.99/12,435.08 = 7,905.63/x
  3. Step 3: Cross multiply
    9,030.99x = 12,435.08 × 7,905.63
  4. Step 4: Simplify right side
    9,030.99x = 98,307,101.97
  5. Step 5: Solve for x
    x = 98,307,101.97/9,030.99
  6. Step 6: Final answer
    x = 10,885.53

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Double scale
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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.