Home / 3,075.10-4,242.68-1,816.60

Finding the Fourth Proportional to 3,075.10, 4,242.68 and 1,816.60

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Solution

The fourth proportional to 3,075.10, 4,242.68 and 1,816.60 is: 2,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.10 : 4,242.68 = 1,816.60 : x
  2. Step 2: Convert to fraction form
    3,075.10/4,242.68 = 1,816.60/x
  3. Step 3: Cross multiply
    3,075.10x = 4,242.68 × 1,816.60
  4. Step 4: Simplify right side
    3,075.10x = 7,707,259.50
  5. Step 5: Solve for x
    x = 7,707,259.50/3,075.10
  6. Step 6: Final answer
    x = 2,506.34

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Half scale
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Double scale
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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.