Home / 7,938.40-10,954.80-4,401.64

Finding the Fourth Proportional to 7,938.40, 10,954.80 and 4,401.64

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Solution

The fourth proportional to 7,938.40, 10,954.80 and 4,401.64 is: 6,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.40 : 10,954.80 = 4,401.64 : x
  2. Step 2: Convert to fraction form
    7,938.40/10,954.80 = 4,401.64/x
  3. Step 3: Cross multiply
    7,938.40x = 10,954.80 × 4,401.64
  4. Step 4: Simplify right side
    7,938.40x = 48,219,085.87
  5. Step 5: Solve for x
    x = 48,219,085.87/7,938.40
  6. Step 6: Final answer
    x = 6,074.16

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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.