Home / 1,715.19-2,364.60-1,085.40

Finding the Fourth Proportional to 1,715.19, 2,364.60 and 1,085.40

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Solution

The fourth proportional to 1,715.19, 2,364.60 and 1,085.40 is: 1,496.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.19 : 2,364.60 = 1,085.40 : x
  2. Step 2: Convert to fraction form
    1,715.19/2,364.60 = 1,085.40/x
  3. Step 3: Cross multiply
    1,715.19x = 2,364.60 × 1,085.40
  4. Step 4: Simplify right side
    1,715.19x = 2,566,536.84
  5. Step 5: Solve for x
    x = 2,566,536.84/1,715.19
  6. Step 6: Final answer
    x = 1,496.36

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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.