Home / 1,907.04-2,631.78-1,121.16

Finding the Fourth Proportional to 1,907.04, 2,631.78 and 1,121.16

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Solution

The fourth proportional to 1,907.04, 2,631.78 and 1,121.16 is: 1,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.04 : 2,631.78 = 1,121.16 : x
  2. Step 2: Convert to fraction form
    1,907.04/2,631.78 = 1,121.16/x
  3. Step 3: Cross multiply
    1,907.04x = 2,631.78 × 1,121.16
  4. Step 4: Simplify right side
    1,907.04x = 2,950,646.46
  5. Step 5: Solve for x
    x = 2,950,646.46/1,907.04
  6. Step 6: Final answer
    x = 1,547.24

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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.