Home / 1,405.56-2,106.80-583.40

Finding the Fourth Proportional to 1,405.56, 2,106.80 and 583.40

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Solution

The fourth proportional to 1,405.56, 2,106.80 and 583.40 is: 874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.56 : 2,106.80 = 583.40 : x
  2. Step 2: Convert to fraction form
    1,405.56/2,106.80 = 583.40/x
  3. Step 3: Cross multiply
    1,405.56x = 2,106.80 × 583.40
  4. Step 4: Simplify right side
    1,405.56x = 1,229,107.12
  5. Step 5: Solve for x
    x = 1,229,107.12/1,405.56
  6. Step 6: Final answer
    x = 874.46

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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.