Home / 5,031.30-7,547.34-1,912.80

Finding the Fourth Proportional to 5,031.30, 7,547.34 and 1,912.80

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Solution

The fourth proportional to 5,031.30, 7,547.34 and 1,912.80 is: 2,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,031.30 : 7,547.34 = 1,912.80 : x
  2. Step 2: Convert to fraction form
    5,031.30/7,547.34 = 1,912.80/x
  3. Step 3: Cross multiply
    5,031.30x = 7,547.34 × 1,912.80
  4. Step 4: Simplify right side
    5,031.30x = 14,436,551.95
  5. Step 5: Solve for x
    x = 14,436,551.95/5,031.30
  6. Step 6: Final answer
    x = 2,869.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.