Home / 9,129.81-12,599.21-5,353.07

Finding the Fourth Proportional to 9,129.81, 12,599.21 and 5,353.07

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Solution

The fourth proportional to 9,129.81, 12,599.21 and 5,353.07 is: 7,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.81 : 12,599.21 = 5,353.07 : x
  2. Step 2: Convert to fraction form
    9,129.81/12,599.21 = 5,353.07/x
  3. Step 3: Cross multiply
    9,129.81x = 12,599.21 × 5,353.07
  4. Step 4: Simplify right side
    9,129.81x = 67,444,426.31
  5. Step 5: Solve for x
    x = 67,444,426.31/9,129.81
  6. Step 6: Final answer
    x = 7,387.28

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Find fourth proportional to 9,130.81, 12,600.59 and 5,354.07
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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.