Home / 7,557.71-10,428.40-4,200.43

Finding the Fourth Proportional to 7,557.71, 10,428.40 and 4,200.43

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Solution

The fourth proportional to 7,557.71, 10,428.40 and 4,200.43 is: 5,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,557.71 : 10,428.40 = 4,200.43 : x
  2. Step 2: Convert to fraction form
    7,557.71/10,428.40 = 4,200.43/x
  3. Step 3: Cross multiply
    7,557.71x = 10,428.40 × 4,200.43
  4. Step 4: Simplify right side
    7,557.71x = 43,803,743.21
  5. Step 5: Solve for x
    x = 43,803,743.21/7,557.71
  6. Step 6: Final answer
    x = 5,795.90

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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.