Home / 1,875.25-2,587.85-1,089.35

Finding the Fourth Proportional to 1,875.25, 2,587.85 and 1,089.35

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Solution

The fourth proportional to 1,875.25, 2,587.85 and 1,089.35 is: 1,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.25 : 2,587.85 = 1,089.35 : x
  2. Step 2: Convert to fraction form
    1,875.25/2,587.85 = 1,089.35/x
  3. Step 3: Cross multiply
    1,875.25x = 2,587.85 × 1,089.35
  4. Step 4: Simplify right side
    1,875.25x = 2,819,069.80
  5. Step 5: Solve for x
    x = 2,819,069.80/1,875.25
  6. Step 6: Final answer
    x = 1,503.30

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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.