Home / 7,122.30-9,828.63-4,328.70

Finding the Fourth Proportional to 7,122.30, 9,828.63 and 4,328.70

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Solution

The fourth proportional to 7,122.30, 9,828.63 and 4,328.70 is: 5,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.30 : 9,828.63 = 4,328.70 : x
  2. Step 2: Convert to fraction form
    7,122.30/9,828.63 = 4,328.70/x
  3. Step 3: Cross multiply
    7,122.30x = 9,828.63 × 4,328.70
  4. Step 4: Simplify right side
    7,122.30x = 42,545,190.68
  5. Step 5: Solve for x
    x = 42,545,190.68/7,122.30
  6. Step 6: Final answer
    x = 5,973.52

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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.