Home / 1,136.91-1,570.01-1,075.55

Finding the Fourth Proportional to 1,136.91, 1,570.01 and 1,075.55

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Solution

The fourth proportional to 1,136.91, 1,570.01 and 1,075.55 is: 1,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.91 : 1,570.01 = 1,075.55 : x
  2. Step 2: Convert to fraction form
    1,136.91/1,570.01 = 1,075.55/x
  3. Step 3: Cross multiply
    1,136.91x = 1,570.01 × 1,075.55
  4. Step 4: Simplify right side
    1,136.91x = 1,688,622.80
  5. Step 5: Solve for x
    x = 1,688,622.80/1,136.91
  6. Step 6: Final answer
    x = 1,485.27

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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.