Home / 8,281.48-11,428.26-4,647.40

Finding the Fourth Proportional to 8,281.48, 11,428.26 and 4,647.40

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Solution

The fourth proportional to 8,281.48, 11,428.26 and 4,647.40 is: 6,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.48 : 11,428.26 = 4,647.40 : x
  2. Step 2: Convert to fraction form
    8,281.48/11,428.26 = 4,647.40/x
  3. Step 3: Cross multiply
    8,281.48x = 11,428.26 × 4,647.40
  4. Step 4: Simplify right side
    8,281.48x = 53,111,695.52
  5. Step 5: Solve for x
    x = 53,111,695.52/8,281.48
  6. Step 6: Final answer
    x = 6,413.31

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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.