Home / 1,585.16-2,187.56-877.05

Finding the Fourth Proportional to 1,585.16, 2,187.56 and 877.05

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Solution

The fourth proportional to 1,585.16, 2,187.56 and 877.05 is: 1,210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.16 : 2,187.56 = 877.05 : x
  2. Step 2: Convert to fraction form
    1,585.16/2,187.56 = 877.05/x
  3. Step 3: Cross multiply
    1,585.16x = 2,187.56 × 877.05
  4. Step 4: Simplify right side
    1,585.16x = 1,918,596.76
  5. Step 5: Solve for x
    x = 1,918,596.76/1,585.16
  6. Step 6: Final answer
    x = 1,210.35

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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.