Home / 5,274.12-7,278.12-2,916.30

Finding the Fourth Proportional to 5,274.12, 7,278.12 and 2,916.30

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Solution

The fourth proportional to 5,274.12, 7,278.12 and 2,916.30 is: 4,024.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.12 : 7,278.12 = 2,916.30 : x
  2. Step 2: Convert to fraction form
    5,274.12/7,278.12 = 2,916.30/x
  3. Step 3: Cross multiply
    5,274.12x = 7,278.12 × 2,916.30
  4. Step 4: Simplify right side
    5,274.12x = 21,225,181.36
  5. Step 5: Solve for x
    x = 21,225,181.36/5,274.12
  6. Step 6: Final answer
    x = 4,024.40

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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.