Home / 7,155.56-9,876.80-5,031.74

Finding the Fourth Proportional to 7,155.56, 9,876.80 and 5,031.74

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Solution

The fourth proportional to 7,155.56, 9,876.80 and 5,031.74 is: 6,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.56 : 9,876.80 = 5,031.74 : x
  2. Step 2: Convert to fraction form
    7,155.56/9,876.80 = 5,031.74/x
  3. Step 3: Cross multiply
    7,155.56x = 9,876.80 × 5,031.74
  4. Step 4: Simplify right side
    7,155.56x = 49,697,526.90
  5. Step 5: Solve for x
    x = 49,697,526.90/7,155.56
  6. Step 6: Final answer
    x = 6,945.30

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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.