Home / 1,875.45-2,586.21-1,129.26

Finding the Fourth Proportional to 1,875.45, 2,586.21 and 1,129.26

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Solution

The fourth proportional to 1,875.45, 2,586.21 and 1,129.26 is: 1,557.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.45 : 2,586.21 = 1,129.26 : x
  2. Step 2: Convert to fraction form
    1,875.45/2,586.21 = 1,129.26/x
  3. Step 3: Cross multiply
    1,875.45x = 2,586.21 × 1,129.26
  4. Step 4: Simplify right side
    1,875.45x = 2,920,503.50
  5. Step 5: Solve for x
    x = 2,920,503.50/1,875.45
  6. Step 6: Final answer
    x = 1,557.23

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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.