Home / 5,715.40-8,572.02-2,428.60

Finding the Fourth Proportional to 5,715.40, 8,572.02 and 2,428.60

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Solution

The fourth proportional to 5,715.40, 8,572.02 and 2,428.60 is: 3,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.40 : 8,572.02 = 2,428.60 : x
  2. Step 2: Convert to fraction form
    5,715.40/8,572.02 = 2,428.60/x
  3. Step 3: Cross multiply
    5,715.40x = 8,572.02 × 2,428.60
  4. Step 4: Simplify right side
    5,715.40x = 20,818,007.77
  5. Step 5: Solve for x
    x = 20,818,007.77/5,715.40
  6. Step 6: Final answer
    x = 3,642.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.