Home / 7,898.60-10,901.78-5,386.70

Finding the Fourth Proportional to 7,898.60, 10,901.78 and 5,386.70

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Solution

The fourth proportional to 7,898.60, 10,901.78 and 5,386.70 is: 7,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.60 : 10,901.78 = 5,386.70 : x
  2. Step 2: Convert to fraction form
    7,898.60/10,901.78 = 5,386.70/x
  3. Step 3: Cross multiply
    7,898.60x = 10,901.78 × 5,386.70
  4. Step 4: Simplify right side
    7,898.60x = 58,724,536.88
  5. Step 5: Solve for x
    x = 58,724,536.88/7,898.60
  6. Step 6: Final answer
    x = 7,434.81

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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.