Home / 5,430.98-8,146.47-1,921.34

Finding the Fourth Proportional to 5,430.98, 8,146.47 and 1,921.34

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Solution

The fourth proportional to 5,430.98, 8,146.47 and 1,921.34 is: 2,882.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.98 : 8,146.47 = 1,921.34 : x
  2. Step 2: Convert to fraction form
    5,430.98/8,146.47 = 1,921.34/x
  3. Step 3: Cross multiply
    5,430.98x = 8,146.47 × 1,921.34
  4. Step 4: Simplify right side
    5,430.98x = 15,652,138.67
  5. Step 5: Solve for x
    x = 15,652,138.67/5,430.98
  6. Step 6: Final answer
    x = 2,882.01

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Double scale
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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.