Home / 3,074.68-4,242.90-1,677.16

Finding the Fourth Proportional to 3,074.68, 4,242.90 and 1,677.16

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Solution

The fourth proportional to 3,074.68, 4,242.90 and 1,677.16 is: 2,314.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.68 : 4,242.90 = 1,677.16 : x
  2. Step 2: Convert to fraction form
    3,074.68/4,242.90 = 1,677.16/x
  3. Step 3: Cross multiply
    3,074.68x = 4,242.90 × 1,677.16
  4. Step 4: Simplify right side
    3,074.68x = 7,116,022.16
  5. Step 5: Solve for x
    x = 7,116,022.16/3,074.68
  6. Step 6: Final answer
    x = 2,314.39

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Half scale
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Double scale
Find fourth proportional to 3,075.68, 4,244.28 and 1,678.16
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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.