Home / 1,504.12-2,075.32-1,223.88

Finding the Fourth Proportional to 1,504.12, 2,075.32 and 1,223.88

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Solution

The fourth proportional to 1,504.12, 2,075.32 and 1,223.88 is: 1,688.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.12 : 2,075.32 = 1,223.88 : x
  2. Step 2: Convert to fraction form
    1,504.12/2,075.32 = 1,223.88/x
  3. Step 3: Cross multiply
    1,504.12x = 2,075.32 × 1,223.88
  4. Step 4: Simplify right side
    1,504.12x = 2,539,953.90
  5. Step 5: Solve for x
    x = 2,539,953.90/1,504.12
  6. Step 6: Final answer
    x = 1,688.67

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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.