Home / 1,413.28-2,115.72-973.60

Finding the Fourth Proportional to 1,413.28, 2,115.72 and 973.60

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Solution

The fourth proportional to 1,413.28, 2,115.72 and 973.60 is: 1,457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.28 : 2,115.72 = 973.60 : x
  2. Step 2: Convert to fraction form
    1,413.28/2,115.72 = 973.60/x
  3. Step 3: Cross multiply
    1,413.28x = 2,115.72 × 973.60
  4. Step 4: Simplify right side
    1,413.28x = 2,059,864.99
  5. Step 5: Solve for x
    x = 2,059,864.99/1,413.28
  6. Step 6: Final answer
    x = 1,457.51

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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.