Home / 5,390.10-8,085.15-4,842.90

Finding the Fourth Proportional to 5,390.10, 8,085.15 and 4,842.90

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Solution

The fourth proportional to 5,390.10, 8,085.15 and 4,842.90 is: 7,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.10 : 8,085.15 = 4,842.90 : x
  2. Step 2: Convert to fraction form
    5,390.10/8,085.15 = 4,842.90/x
  3. Step 3: Cross multiply
    5,390.10x = 8,085.15 × 4,842.90
  4. Step 4: Simplify right side
    5,390.10x = 39,155,572.94
  5. Step 5: Solve for x
    x = 39,155,572.94/5,390.10
  6. Step 6: Final answer
    x = 7,264.35

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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.