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Finding the Fourth Proportional to 1,975.93, 2,728.08 and 1,230.93

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Solution

The fourth proportional to 1,975.93, 2,728.08 and 1,230.93 is: 1,699.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.93 : 2,728.08 = 1,230.93 : x
  2. Step 2: Convert to fraction form
    1,975.93/2,728.08 = 1,230.93/x
  3. Step 3: Cross multiply
    1,975.93x = 2,728.08 × 1,230.93
  4. Step 4: Simplify right side
    1,975.93x = 3,358,075.51
  5. Step 5: Solve for x
    x = 3,358,075.51/1,975.93
  6. Step 6: Final answer
    x = 1,699.49

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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.