Home / 1,861.65-2,569.32-1,075.55

Finding the Fourth Proportional to 1,861.65, 2,569.32 and 1,075.55

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Solution

The fourth proportional to 1,861.65, 2,569.32 and 1,075.55 is: 1,484.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.65 : 2,569.32 = 1,075.55 : x
  2. Step 2: Convert to fraction form
    1,861.65/2,569.32 = 1,075.55/x
  3. Step 3: Cross multiply
    1,861.65x = 2,569.32 × 1,075.55
  4. Step 4: Simplify right side
    1,861.65x = 2,763,419.28
  5. Step 5: Solve for x
    x = 2,763,419.28/1,861.65
  6. Step 6: Final answer
    x = 1,484.39

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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.