Home / 1,505.69-2,075.36-1,008.15

Finding the Fourth Proportional to 1,505.69, 2,075.36 and 1,008.15

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Solution

The fourth proportional to 1,505.69, 2,075.36 and 1,008.15 is: 1,389.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.69 : 2,075.36 = 1,008.15 : x
  2. Step 2: Convert to fraction form
    1,505.69/2,075.36 = 1,008.15/x
  3. Step 3: Cross multiply
    1,505.69x = 2,075.36 × 1,008.15
  4. Step 4: Simplify right side
    1,505.69x = 2,092,261.36
  5. Step 5: Solve for x
    x = 2,092,261.36/1,505.69
  6. Step 6: Final answer
    x = 1,389.57

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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.