Home / 7,426.90-11,139.98-1,880.34

Finding the Fourth Proportional to 7,426.90, 11,139.98 and 1,880.34

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Solution

The fourth proportional to 7,426.90, 11,139.98 and 1,880.34 is: 2,820.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.90 : 11,139.98 = 1,880.34 : x
  2. Step 2: Convert to fraction form
    7,426.90/11,139.98 = 1,880.34/x
  3. Step 3: Cross multiply
    7,426.90x = 11,139.98 × 1,880.34
  4. Step 4: Simplify right side
    7,426.90x = 20,946,909.39
  5. Step 5: Solve for x
    x = 20,946,909.39/7,426.90
  6. Step 6: Final answer
    x = 2,820.41

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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.