Home / 7,856.58-10,837.76-4,980.05

Finding the Fourth Proportional to 7,856.58, 10,837.76 and 4,980.05

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Solution

The fourth proportional to 7,856.58, 10,837.76 and 4,980.05 is: 6,869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.58 : 10,837.76 = 4,980.05 : x
  2. Step 2: Convert to fraction form
    7,856.58/10,837.76 = 4,980.05/x
  3. Step 3: Cross multiply
    7,856.58x = 10,837.76 × 4,980.05
  4. Step 4: Simplify right side
    7,856.58x = 53,972,507.60
  5. Step 5: Solve for x
    x = 53,972,507.60/7,856.58
  6. Step 6: Final answer
    x = 6,869.72

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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.