Home / 1,383.93-2,075.18-459.15

Finding the Fourth Proportional to 1,383.93, 2,075.18 and 459.15

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Solution

The fourth proportional to 1,383.93, 2,075.18 and 459.15 is: 688.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.93 : 2,075.18 = 459.15 : x
  2. Step 2: Convert to fraction form
    1,383.93/2,075.18 = 459.15/x
  3. Step 3: Cross multiply
    1,383.93x = 2,075.18 × 459.15
  4. Step 4: Simplify right side
    1,383.93x = 952,816.60
  5. Step 5: Solve for x
    x = 952,816.60/1,383.93
  6. Step 6: Final answer
    x = 688.49

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1.5x scale

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.