Home / 7,140.30-9,856.44-4,785.63

Finding the Fourth Proportional to 7,140.30, 9,856.44 and 4,785.63

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Solution

The fourth proportional to 7,140.30, 9,856.44 and 4,785.63 is: 6,606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.30 : 9,856.44 = 4,785.63 : x
  2. Step 2: Convert to fraction form
    7,140.30/9,856.44 = 4,785.63/x
  3. Step 3: Cross multiply
    7,140.30x = 9,856.44 × 4,785.63
  4. Step 4: Simplify right side
    7,140.30x = 47,169,274.96
  5. Step 5: Solve for x
    x = 47,169,274.96/7,140.30
  6. Step 6: Final answer
    x = 6,606.06

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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.