Home / 1,930.64-2,891.08-1,386.32

Finding the Fourth Proportional to 1,930.64, 2,891.08 and 1,386.32

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Solution

The fourth proportional to 1,930.64, 2,891.08 and 1,386.32 is: 2,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.64 : 2,891.08 = 1,386.32 : x
  2. Step 2: Convert to fraction form
    1,930.64/2,891.08 = 1,386.32/x
  3. Step 3: Cross multiply
    1,930.64x = 2,891.08 × 1,386.32
  4. Step 4: Simplify right side
    1,930.64x = 4,007,962.03
  5. Step 5: Solve for x
    x = 4,007,962.03/1,930.64
  6. Step 6: Final answer
    x = 2,075.98

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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.