Home / 1,507.15-2,259.18-890.74

Finding the Fourth Proportional to 1,507.15, 2,259.18 and 890.74

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Solution

The fourth proportional to 1,507.15, 2,259.18 and 890.74 is: 1,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.15 : 2,259.18 = 890.74 : x
  2. Step 2: Convert to fraction form
    1,507.15/2,259.18 = 890.74/x
  3. Step 3: Cross multiply
    1,507.15x = 2,259.18 × 890.74
  4. Step 4: Simplify right side
    1,507.15x = 2,012,341.99
  5. Step 5: Solve for x
    x = 2,012,341.99/1,507.15
  6. Step 6: Final answer
    x = 1,335.20

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1.5x scale

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.