Home / 9,389.47-12,957.63-5,140.46

Finding the Fourth Proportional to 9,389.47, 12,957.63 and 5,140.46

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Solution

The fourth proportional to 9,389.47, 12,957.63 and 5,140.46 is: 7,093.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.47 : 12,957.63 = 5,140.46 : x
  2. Step 2: Convert to fraction form
    9,389.47/12,957.63 = 5,140.46/x
  3. Step 3: Cross multiply
    9,389.47x = 12,957.63 × 5,140.46
  4. Step 4: Simplify right side
    9,389.47x = 66,608,209.11
  5. Step 5: Solve for x
    x = 66,608,209.11/9,389.47
  6. Step 6: Final answer
    x = 7,093.92

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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.