Home / 9,386.40-12,937.68-6,729.60

Finding the Fourth Proportional to 9,386.40, 12,937.68 and 6,729.60

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Solution

The fourth proportional to 9,386.40, 12,937.68 and 6,729.60 is: 9,275.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,386.40 : 12,937.68 = 6,729.60 : x
  2. Step 2: Convert to fraction form
    9,386.40/12,937.68 = 6,729.60/x
  3. Step 3: Cross multiply
    9,386.40x = 12,937.68 × 6,729.60
  4. Step 4: Simplify right side
    9,386.40x = 87,065,411.33
  5. Step 5: Solve for x
    x = 87,065,411.33/9,386.40
  6. Step 6: Final answer
    x = 9,275.70

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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.