Home / 7,407.40-10,219.78-4,423.72

Finding the Fourth Proportional to 7,407.40, 10,219.78 and 4,423.72

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Solution

The fourth proportional to 7,407.40, 10,219.78 and 4,423.72 is: 6,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.40 : 10,219.78 = 4,423.72 : x
  2. Step 2: Convert to fraction form
    7,407.40/10,219.78 = 4,423.72/x
  3. Step 3: Cross multiply
    7,407.40x = 10,219.78 × 4,423.72
  4. Step 4: Simplify right side
    7,407.40x = 45,209,445.18
  5. Step 5: Solve for x
    x = 45,209,445.18/7,407.40
  6. Step 6: Final answer
    x = 6,103.28

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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.