Home / 8,938.40-12,335.07-4,905.23

Finding the Fourth Proportional to 8,938.40, 12,335.07 and 4,905.23

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Solution

The fourth proportional to 8,938.40, 12,335.07 and 4,905.23 is: 6,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.40 : 12,335.07 = 4,905.23 : x
  2. Step 2: Convert to fraction form
    8,938.40/12,335.07 = 4,905.23/x
  3. Step 3: Cross multiply
    8,938.40x = 12,335.07 × 4,905.23
  4. Step 4: Simplify right side
    8,938.40x = 60,506,284.54
  5. Step 5: Solve for x
    x = 60,506,284.54/8,938.40
  6. Step 6: Final answer
    x = 6,769.25

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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.