Home / 9,402.47-12,975.41-5,153.81

Finding the Fourth Proportional to 9,402.47, 12,975.41 and 5,153.81

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Solution

The fourth proportional to 9,402.47, 12,975.41 and 5,153.81 is: 7,112.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,402.47 : 12,975.41 = 5,153.81 : x
  2. Step 2: Convert to fraction form
    9,402.47/12,975.41 = 5,153.81/x
  3. Step 3: Cross multiply
    9,402.47x = 12,975.41 × 5,153.81
  4. Step 4: Simplify right side
    9,402.47x = 66,872,707.17
  5. Step 5: Solve for x
    x = 66,872,707.17/9,402.47
  6. Step 6: Final answer
    x = 7,112.25

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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.