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Finding the Fourth Proportional to 4,280.58, 6,420.21 and 1,358.50

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Solution

The fourth proportional to 4,280.58, 6,420.21 and 1,358.50 is: 2,037.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.58 : 6,420.21 = 1,358.50 : x
  2. Step 2: Convert to fraction form
    4,280.58/6,420.21 = 1,358.50/x
  3. Step 3: Cross multiply
    4,280.58x = 6,420.21 × 1,358.50
  4. Step 4: Simplify right side
    4,280.58x = 8,721,855.29
  5. Step 5: Solve for x
    x = 8,721,855.29/4,280.58
  6. Step 6: Final answer
    x = 2,037.54

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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.