Home / 1,329.47-1,994.81-1,307.60

Finding the Fourth Proportional to 1,329.47, 1,994.81 and 1,307.60

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Solution

The fourth proportional to 1,329.47, 1,994.81 and 1,307.60 is: 1,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.47 : 1,994.81 = 1,307.60 : x
  2. Step 2: Convert to fraction form
    1,329.47/1,994.81 = 1,307.60/x
  3. Step 3: Cross multiply
    1,329.47x = 1,994.81 × 1,307.60
  4. Step 4: Simplify right side
    1,329.47x = 2,608,413.56
  5. Step 5: Solve for x
    x = 2,608,413.56/1,329.47
  6. Step 6: Final answer
    x = 1,962.00

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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.